Tetris

Tetris (Russian: Тетрис)[lower-alpha 1] is a puzzle video game created by Alexey Pajitnov, a Soviet software engineer, in the mid-1980s. In Tetris, falling pieces consisting of four connected blocks, known as tetrominoes, must be sorted into a pile. Once a horizontal line of the playfield is filled with blocks, the line disappears, granting points and preventing the pile from reaching the top. This gameplay has been used in approximately 220 versions across at least 70 platforms. Newer versions frequently add game mechanics, some of which have become standard. As of December 2024[update], Tetris is the second-best-selling video game series, with over 520 million sales, mostly on mobile devices.

In the mid-1980s, Pajitnov created Tetris in his spare time while working at the Dorodnitsyn Computing Center of the Academy of Sciences. He initially programmed it in Pascal for the Elektronika 60 in about three weeks, then spent over two months porting it to the IBM PC using Turbo Pascal with help from Dmitry Pavlovsky and Vadim Gerasimov. Floppy disk copies were distributed freely throughout Moscow before spreading to Eastern Europe. Robert Stein of Andromeda Software saw Tetris in Hungary and contacted the Dorodnitsyn Computing Center to secure a license to release it commercially. Stein sublicensed it to Mirrorsoft in the UK and Spectrum HoloByte in the US. Both companies released Tetris in 1988 to commercial success and sublicensed to additional companies, including Henk Rogers' Bullet-Proof Software. Rogers negotiated with Elektronorgtechnica, the state-owned organization in charge of licensing Soviet software, to license Tetris to Nintendo for the Game Boy and Nintendo Entertainment System (NES); both versions were released in 1989.

With 35 million sales as of June 2024, the Game Boy version is the highest-selling version and among the best-selling video games. It contributed to the Game Boy's success and popularized Tetris. At the end of 1995, Dorodnitsyn Computing Center's rights to Tetris, arranged ten years prior, reverted to Pajitnov. The Tetris Company was established to manage rights and licensing. It created guidelines and a minimum specification for licensed Tetris games. Certain features not in the original games became standardized over time. Versions of Tetris were released on mobile devices starting in the 2000s, with Electronic Arts holding a license on such ports from 2006 to 2020, to commercial success. Tetris received renewed popularity in the late-2010s with the release of the critically successful Tetris Effect (2018) and Tetris 99 (2019).

Tetris is frequently cited as one of the greatest and most influential games, and was among the inaugural class inducted into the World Video Game Hall of Fame in 2015. Its gameplay has been influential in the genre of puzzle video games, being cited as an early example of casual gaming. Furthermore, Tetris has been represented in a vast array of media such as architecture and art and been the subject of academic research, including studies of its potential for psychological intervention. A competitive culture has formed around Tetris, particularly the NES version, with players - typically adolescents - competing at the annual Classic Tetris World Championship. A film dramatization of its development was released in 2023.

## Contents

* 1 Gameplay
* 2 History
* 2.1 Creation (1984–1985)
* 2.2 Spread beyond the Soviet Union (1985–1988)
* 2.3 International negotiations (1988–1989)
* 2.4 Legal battles and aftermath (1989–1993)
* 2.5 The Tetris Company and Blue Planet Software (1995–2012)
* 2.6 Maya Rogers' succession and resurgence of popularity (2014–present)
* 3 Versions
* 4 Reception
* 4.1 Sales
* 4.2 Accolades
* 5 Legacy
* 5.1 Industry impact
* 5.2 Cultural impact
* 5.3 Research
* 6 See also
* 7 Notes
* 8 References
* 9 Bibliography
* 9.1 Books
* 9.2 Video documentaries
* 10 Further reading
* 11 External links

## Gameplay

A typical Tetris game screen

Across its numerous versions, Tetris generally has a consistent puzzle video game design.[1] Gameplay consists of a rectangular field in which pieces consisting of four connected blocks, called tetrominoes,[lower-alpha 2] descend one at a time from the top-center. During the descent, the player can move the piece horizontally and rotate them until they touch the bottom of the field or another piece.[3][4] The player's goal is to stack the pieces in the field to create horizontal lines of blocks.[5] When a line is completed, it disappears and the blocks placed above fall one row. The speed of the descending pieces increases as lines are cleared. The game ends if the accumulated pieces in the field block other pieces from entering the field, a process known as "topping out".[4] Common mechanics among Tetris versions include the queue (viewing the pieces that are next to appear), soft drop (increasing the descent of the piece), hard drop (instantly placing the piece as far down as it can go), and holding (reserving a piece for later use).[5]

The objective of Tetris is to collect as many points as possible during a gameplay session by clearing lines.[3] Tetris's scoring system has remained mostly consistent since Tetris DS (2006) with some exceptions. Points gained during gameplay increase with the descent speed. The more lines cleared at once, the higher the score for a line clear. Completing four horizontal lines at once by placing an I-shaped tetromino into a single-column gap is referred to as a "Tetris"; most versions award the highest score for it. The player can also gain points by using hard drops or soft drops.[5] Advanced techniques, often used in competitive play, include T-spins (spinning a T-shaped tetromino into a blocked gap), perfect clears (emptying the field following a line clear), and combos (clearing lines consecutively).[6]

## History

### Creation (1984–1985)

Alexey Pajitnov (pictured in 2008), the creator of Tetris

Alexey Pajitnov was a speech recognition and artificial intelligence researcher at the Dorodnitsyn Computing Center of the Academy of Sciences.[7] While at the center, he developed more than twenty types of games in his spare time[8]: 72 on the Elektronika 60,[9] a Russian clone of the PDP-11 computer.[10] He became inspired to convert pentomino tiling puzzles to the computer[11] after he bought a pentomino puzzle set from a store and played with it in his office.[12] Sources vary on the exact timing: certain sources indicate June 1984,[11] while the BBC documentary Tetris: From Russia with Love (2004) suggests spring 1985.[13]

Pajitnov programmed Tetris using Pascal for the RT-11 operating system on the Elektronika 60[14] and experimented with different versions.[15] Because the Elektronika 60 had no graphical interface, Pajitnov modeled the field and pieces using spaces and brackets.[15] He felt that the game would be needlessly complicated with the twelve different shapes of pentominoes, so he scaled the concept down to tetrominoes, of which there are only seven shapes.[11] Afterward, he programmed the basic mechanics, including the ability to flip tetrominoes as they fell in a vertical screen and the clearing of lines.[11][16][17] The name Tetris was a combination of "tetra" (meaning "four") and Pajitnov's favorite sport, tennis.[18][19]

Pajitnov completed the first version of Tetris, though sources differ on the timeline. In a 1993 interview with the Japanese magazine The Super Famicom, he recalled that the game was finished in 1985 and said it took about three weeks to develop due to its simplicity,[8]: 72 while Henk Rogers reported in 2024 that Pajitnov recalled first developing it on the Elektronika 60 in 1984.[20] This version had no scoring system and no levels,[21] but it nonetheless captivated Pajitnov's peers,[22][23] some of whom obtained copies of the completed code to run on their compatible work computers.[24]

Pajitnov sought to port Tetris to the IBM Personal Computer (IBM PC), which had a higher-quality display than the Elektronika 60. He recruited his colleague Dmitry Pavlovsky and the 16-year-old computer prodigy Vadim Gerasimov.[25][26] Using Turbo Pascal,[14] the three adapted Tetris to the IBM PC over two months, with Gerasimov incorporating color and Pavlovsky incorporating a scoreboard.[25][27] Floppy disk copies of this version were distributed freely throughout the Dorodnitsyn Computing Center, before spreading quickly among Moscow computer circles.[28] Pajitnov kept note of second-hand accounts of Tetris's spread during this time.[29] Tetris reportedly won second place in a Zelenodolsk computer game competition in November 1985,[25] and by 1986, nearly everyone with an IBM computer in Moscow and several major cities had played Tetris.[30]

### Spread beyond the Soviet Union (1985–1988)

The first version of Tetris, developed for the Elektronika 60 in the mid-1980s, is shown here running in emulation.

Under Soviet copyright law, intellectual rights were not well protected, and the state-run organization Elektronorgtechnica (Elorg) had a monopoly on the import and export of software.[31] Around this time, Pajitnov arranged for the Dorodnitsyn Computing Center to have the rights to Tetris for ten years to ease potential legal troubles.[32] As a result, Pajitnov could not sell Tetris for profit. Nonetheless, Pajitnov's manager Victor Brjabrin liked Tetris and sought opportunities for success beyond the Soviet Union.[33][34] In early 1986, Brjabrin sent a copy of Tetris to the SZKI Institute of Computer Studies in Budapest.[33][34] Robert Stein, founder of Andromeda Software who profited by licensing software from Hungary to UK companies, encountered Tetris during a visit to the SZKI Institute and found its gameplay compelling.[35] Stein learned from the SZKI Institute director that a researcher there, Gábor Bolgár, had ported Tetris to the Commodore 64.[36] Stein returned to London and contacted Dorodnitsyn Computing Center by telex to obtain the license rights, believing he could sell those rights to a larger UK publisher.[37]

Brjabrin received the telex and, after translating it from English to Russian, disclosed it to Pajitnov, who spent days attempting to compose, translate to English, and send a favorable yet noncommittal response by telex to Stein. Despite this attempt, Stein interpreted the response as granting him the license and proceeded to find a publisher for Tetris.[38] Stein pitched Tetris to Jim Mackonochie of Mirrorsoft, a UK software company founded by business magnate Robert Maxwell and Mackonochie. Though Mackonochie was skeptical about the commercial potential of Tetris, he consulted Phil Adam, president of US sister company Spectrum HoloByte, for his input. During his overseas visit to Mirrorsoft, Adam played Tetris for hours and then encouraged Mackonochie to accept Stein's offer. Though still cautious, Mackonochie agreed to allow himself the licensing rights for Europe and Adam the rights for the United States and Japan.[39] Stein sold the rights to the two companies for £3,000 and royalties of 7.5–15% of sales, even though negotiations with the Dorodnitsyn Computing Center were at a standstill, with the Dorodnitsyn Computing Center being resistant to selling Tetris in the West.[40]

Gilman Louie, CEO of Spectrum HoloByte, sought to exoticize the game's Soviet origins, marketing it as the first Soviet product to be sold in North America, alongside implementing Soviet folk music and imagery during gameplay and using red packaging adorned with an illustration of Saint Basil's Cathedral.[41][42] Tetris was first commercially released in the West for the IBM PC, with ports to other computer systems planned for release in the following weeks. Mirrorsoft released the game in the United Kingdom on January 27, 1988,[43] and Spectrum HoloByte released it in the United States on January 29, 1988.[44] Gábor Bolgár sold his Commodore 64 port to Stein's Andromeda Software, who polished it with additional sound work before licensing it to Mirrorsoft.[45] Mirrorsoft rewrote the code of the original IBM release for systems such as the Amiga and Atari ST.[46] Boosted by word of mouth and positive reviews,[47][48] this Tetris release was commercially successful, selling 100 thousand copies within a year.[49] At the Software Publishers Association's Excellence in Software Awards ceremony in 1989, Tetris won across three categories.[50]

At the time, the only document certifying a license fee was the telex from Pajitnov and Brjabrin, meaning that Stein had sold the license for a game he did not yet own. Additionally, Alexander Alexinko, director of Elorg, discovered Stein's negotiations with Pajitnov and Dorodnitsyn Computing Center and assessed their communications with disapproval. In response, Elorg took over representing the Soviet Union in negotiations.[51] Through communications, Alexinko attempted to revoke any potential deal the Soviet Union might have had with Stein in favor of having Elorg itself sell Tetris internationally. Stein responded by threatening to create a scandal that would harm the Soviet Union's international standing, persuading Alexinko to consider negotiating the rights to Tetris.[52] An agreement was drafted by the end of February 1988 and finalized by May, granting Stein the rights to Tetris on computers.[53][52]

### International negotiations (1988–1989)

Henk Rogers (pictured in 2010), representing Nintendo, negotiated with Elorg for the rights to Tetris.

Following the commercial release of Tetris, Spectrum HoloByte and Mirrorsoft started licensing the game to other companies for platforms that were not covered by the contract that Stein and Elorg had agreed to.[54] At the time, Henk Rogers had been seeking video games across the world to sell in Japan through his company Bullet-Proof Software; he discovered Tetris as a publicly displayed video game at the 1988 Winter Consumer Electronics Show (CES).[55] Mirrorsoft sold Atari Games subsidiary Tengen the rights to sell non-computer releases of Tetris in Japan in exchange for the rights to sell computer ports of Blasteroids worldwide.[56] Afterward, Tengen sold the Japanese arcade rights to Sega and the console rights to Rogers, who received the Japanese computer rights from Spectrum HoloByte.[57][58] Bullet-Proof Software released Tetris for Japanese computers in November 1988[59]: 88 and Nintendo's Family Computer (Famicom) in December 1988, the latter of which became commercially successful, selling two million copies in Japan.[60] Despite this, Elorg was unaware of the Famicom version and was receiving no royalties from Tetris's worldwide success.[61][62]

Around the time of Tetris's Famicom version, Nintendo developed the Game Boy, an economical handheld game console that interested Nintendo president Hiroshi Yamauchi and Nintendo of America president Minoru Arakawa.[63] Arakawa, aided by Nintendo of America vice president Howard Lincoln, sought to port Tetris to the Game Boy, believing that it would be a commercial success. They were both discouraged by the convoluted nature of the game's legal rights, leading Arakawa to enlist Rogers in getting the handheld rights to Tetris.[64] Rogers contacted Stein by fax in November 15, 1988, for the handheld rights, with Stein responding that he was negotiating them with Elorg. At the time, Alexinko had been replaced by the more adversarial Evgeni Belikov as director of Elorg. After failing to get the rights after multiple attempts at contacting Stein, Rogers abandoned him in favor of negotiating directly with the Soviet government.[65] In February 1989, Rogers traveled to the Soviet Union and arrived at the Elorg offices uninvited to negotiate the rights. Discussions with Rogers were scheduled the next day.[66]

While trying to persuade Elorg to grant him the handheld rights, Rogers displayed a Famicom Tetris cartridge to demonstrate the game's success. Belikov did not recognize the cartridge, believing that the rights to Tetris had only been signed for computer systems per the contract with Stein, and accused Rogers of illegal publication.[67][68] Though surprised, Rogers provided a check of over $40,000 to Elorg as to remedy this breach of contract and discussed granting him the console rights. Afterward, Belikov recognized the potential financial benefits of allying with Rogers over the other incoming negotiators: Stein and Robert's son Kevin Maxwell.[69] While Rogers was consulting Nintendo for a potential offer to Elorg, Belikov implicitly diminished Stein and Kevin's standing in subsequent meetings by coercing the former into signing an updated contract with an exclusionary definition of computers and baiting the latter into admitting that Mirrosoft did not have the console rights, unaware of the commercial Famicom release.[70] Rogers, alongside Arakawa and Lincoln, returned to Moscow, and after a few days of negotiation, Nintendo received both the handheld and console rights to Tetris from Elorg.[71]

### Legal battles and aftermath (1989–1993)

Tetris running on a Nintendo Game Boy

On March 31, 1989, taking advantage of the new agreement, Lincoln sent a cease and desist fax to Hideyuki Nakajima, president of Atari Games, concerning their subsidiary Tengen's production of Tetris for the Nintendo Entertainment System (NES), the North American equivalent to the Famicom.[72] Believing themselves to own the console rights to Tetris, Tengen filed copyright applications for the game in the United States and preemptively sued Nintendo.[73][72] Meanwhile, after being informed by Kevin, Robert pressured Elorg for sidestepping prior agreements with his companies by contacting ministers from both the Soviet and UK governments.[74] In an in-person meeting, Robert informed Soviet General Secretary Mikhail Gorbachev of his situation regarding Tetris, to which he responded that Robert "should no longer worry about the Japanese company".[75][76] Despite pressure from both Robert and the Soviet government, Belikov stated his refusal to concede in a conversation with Lincoln.[77]

After a marketing campaign ordered by Nakajima, Tengen released their version of Tetris on the NES on May 17, 1989, selling tens of thousands of copies within a few weeks.[78] The next month, Judge Fern M. Smith of the US District Court for the Northern District of California presided over competing lawsuits from Atari Games and Nintendo over their console rights to Tetris.[79] Both companies motioned for preliminary injunctions that would prohibit the other company from selling Tetris. On June 15, 1989, in defense of its motion for injunction, Atari Games argued that the NES fell under the definition of computers under the original contract and that Elorg only excluded consoles from its definition of computers to take advantage of higher profits from Nintendo. Based on contradicting evidence, Smith rejected this argument and declared that Mirrorsoft and Spectrum HoloByte had never received explicit authorization for marketing on consoles, granting a preliminary injunction against Atari Games on June 22.[79]

The next day, Atari Games withdrew its NES version from sale, and thousands of cartridges remained unsold in its warehouses. Preference for this release over Nintendo's led to Atari Games cartridges selling for up to $300 on the secondary market.[80] The Game Boy version of Tetris was released in Japan on June 14, 1989,[81] and as a pack-in game in the United States on July 31, 1989.[82][83] Nintendo's NES version was released the same year. Both releases achieved commercial success.[84] Tetris was the primary game promoted for the Game Boy, becoming its killer app.[85] It generated $80 million in revenue[86] and popularized both the Game Boy and Tetris.[87][88] The NES version quickly sold three million copies and appeared on Nintendo's most popular games list for over a year.[83][89]

On November 13, 1989, Smith ended the legal battle between Nintendo and Atari Games regarding Tetris by summary judgment, granting Nintendo the console rights to Tetris.[90] In 1991, with Rogers' help, Pajitnov and his family emigrated to Seattle, where he worked as a freelance game designer.[91][92] During this time, Pajitnov worked on several sequels to Tetris. Welltris (1990) involved adjusting geometrical pieces descending down one of four walls of a three-dimensional well, and Hatris (1990) and Faces...tris III (1991) replaced descending tetrominoes with hats and faces respectively.[93] Though they generally received positive reviews and commercial success,[92] with Faces...Tris III winning "Best Action/Arcade Program" in the 1991 Excellence in Software Awards,[94] none replicated Tetris' success.[95][96] Other early versions and sequels of Tetris were developed without Pajitnov's involvement, including Spectrum Holobyte's Super Tetris (1991), Bullet-Proof Software's Tetris 2 + BomBliss (1991) and Tetris Battle Gaiden (1993), and Nintendo's Tetris 2 (1993).[93]

### The Tetris Company and Blue Planet Software (1995–2012)

A fifth-generation iPod running Tetris (2006)

The Dorodnitsyn Computing Center's rights to Tetris expired at the end of 1995, reverting back to Pajitnov.[32] Worried that Elorg, which had become a private company under Belikov during the 1991 collapse of the Soviet Union,[91] would try to claim the rights, Pajitnov recruited Rogers to secure them. Rogers formed Blue Planet Software and, after a year of negotiations, established the Tetris Company as an equal partnership between Elorg and Blue Planet Software in 1996,[97] "to own and administer" the Tetris rights,[91] and "to serve as the exclusive source of all Tetris licenses".[98] Blue Planet Software served as the "exclusive agent for the Tetris brand".[93]: 25 In 1996, the Tetris Company created quality and consistency guidelines for Tetris games and a "minimum specification" that licensed games must follow.[93]: 25 Rogers acquired Elorg in 2005 and then formed a new company, Tetris Holding, to which the Tetris trademarks and rights were transferred.[98][97] The Tetris Company has also enforced its copyright of Tetris against unauthorized clones,[99][100] such as in the 2012 case Tetris Holding, LLC v. Xio Interactive, Inc., where a judge ruled that the iOS game Mino violated Tetris's copyright based on look and feel.[101]

Pajitnov and Rogers sought to keep Tetris versions fresh, and innovated in new directions. Tetrisphere, developed by H2O Entertainment and released on August 11, 1997, was an example of this innovation.[93][102] Gameplay involved rotating a three-dimensional sphere to place pieces on its surface. It was the first puzzle video game on the Nintendo 64 and garnered a cult following.[103][104] David Crookes of Retro Gamer called Tetrisphere "proof that the concept could be modernised and tweaked, while still being faithful to the original".[93] Another version on the Nintendo 64, the Japan-exclusive Tetris 64 (1998), allowed for four players and was the only game to use the Nintendo 64's Bio Sensor, which detects the player's pulse.[93][105] On other platforms around this time, Tetris Plus (1996), Tetris DX (1998), and The Next Tetris (1999) added new game modes, and Software:Tetris: The Grand Master (1998) was an arcade game aimed at experienced players.[93]

According to Rogers, in order to appeal to beginner players, the Tetris Company started to incorporate features not in the original releases into the Tetris guidelines.[106] These features included the hold feature and ability to perform both soft drops and hard drops in The New Tetris in 1999,[107] the easy spin and super rotation system in Tetris Worlds in 2001,[108] and the scoring system introduced in Tetris DS in 2006.[5] Critics panned Tetris Worlds for the easy spin mechanic, which allowed players to delay a piece's descent by continually rotating it. Despite the controversy and Pajitnov's reluctance, the mechanic was implemented into the Tetris guidelines.[109][106] Tetris Worlds also introduced the super rotation system, defining how pieces are to rotate,[108] which most Tetris games have since used.[5]

Tetris was first released on mobile devices in 2001 by G-Mode.[110] In 2002, Rogers formed Blue Lava Wireless to develop Tetris games for mobile platforms.[93] JAMDAT acquired Blue Lava Wireless in April 2005, granting the former a 15-year license of Tetris for mobile platforms.[111] By December 2005, when Electronic Arts (EA) started its acquisition of JAMDAT, Tetris had been consistently selling well on American carrier phones.[112] EA completed its acquisition in February 2006, granting it the mobile license for Tetris.[113] EA Mobile released their mobile version of Tetris as a launch game for the iTunes store on iPod 5G on September 11, 2006,[114][115] and on the Apple App Store on iOS on July 10, 2008.[116] By January 2010, EA's mobile releases reached 100 million paid downloads, making Tetris the most popular mobile game at the time.[117]

### Maya Rogers' succession and resurgence of popularity (2014–present)

A womanMaya Rogers (pictured in 2022) succeeded her father as CEO of Blue Planet Software in January 2014.

In January 2014, after eight years of involvement, Henk Rogers' daughter Maya succeeded him as the CEO of Blue Planet Software.[lower-alpha 3] She began by planning activities for Tetris's 30th anniversary. In an interview with VentureBeat in June 2014, Maya spoke of her desire to expand Tetris's brand, such as through merchandising, and keeping the game fresh.[120] Sega released Puyo Puyo Tetris, a crossover between Tetris and Puyo Puyo, in Japan on February 6, 2014, for multiple platforms.[121] Puyo Puyo Tetris sold over 60,000 copies within a week, with the Nintendo 3DS port being the second-highest-selling game of the week according to 4Gamer.net.[122] Ubisoft's Tetris Ultimate was released on the Nintendo 3DS in November 2014 and the PlayStation 4 and Xbox One in December 2014.[123] Tetris Ultimate received mixed reviews, though the online multiplayer was generally seen favorably.[124][93]

In the late 2010s, the Tetris series had a resurgence in popularity with the release of Tetris Effect and Tetris 99.[lower-alpha 4] PCMag credited the resurgence to the 2017 release of Puyo Puyo Tetris in the Western world,[126] where it received positive reviews and sold 1.4 million copies worldwide by November 2020.[131][132] Tetris Effect, developed by Monstars and Resonair and published by Enhance Games,[133] was released on the PlayStation 4 on November 9, 2018,[134] and on Windows on July 23, 2019,[135] receiving widespread critical acclaim for its visuals and emotional impact.[125][136][137] Tetris 99 is a battle royale version of Tetris made available to subscribers of Nintendo Switch Online on February 13, 2019, upon its surprise announcement during Nintendo Direct.[138] It received positive reviews and became Nintendo Switch Online's killer app;[125][126][139] according to President of Nintendo Shuntaro Furukawa, 2.8 million Nintendo Switch Online users played Tetris 99 within a few months of release.[140]

EA announced in January 2020 that its license for mobile releases of Tetris would expire on April 21, 2020, with the game becoming inoperable as a result.[141] Video game developer N3twork subsequently released authorized mobile releases on the iOS and Android on January 23, 2020.[142] These accumulated 30 million downloads before social casino company PlayStudios acquired the rights to them in November 2021.[143] On March 28, 2023, Playstudios incorporated a playAwards loyalty program onto the Tetris mobile apps, allowing players to win points for playing Tetris that can be redeemed for real-life awards.[144] Tetris Forever, a compilation of Tetris games and interactive documentary developed by Digital Eclipse, was released on November 12, 2024,[145] to positive reviews for chronicling the history of Tetris.[146][147]

## Versions

Main article: List of Tetris variants

Tetris has been released on multiple platforms, including game consoles, personal computers, and smartphones. Pajitnov said there are hundreds of versions of Tetris.[148] Guinness World Records recognizes Tetris as the most ported video game, having appeared on at least 70 platforms,[149] and as the video game with the most distinct versions (approximately 220 official), each featuring unique elements such as music and images.[150]

The core gameplay has remained consistent.[1] Since 1996, the Tetris Company has maintained annual standard specifications for authorized versions of Tetris.[21][106] Pajitnov considers these guidelines a baseline for different versions and not "set in stone".[151] Several game mechanics of Tetris have been changed over time. For example, the distribution of tetrominoes was completely randomized in early versions, while modern versions use a "bag system", in which each tetromino is guaranteed to appear once in a set of seven.[152][153] Other mechanics that have become standardized in modern versions include the ability to hold tetrominoes to swap with later pieces, introduced in The New Tetris (1999),[154] and the super rotation system and infinite spin, introduced in Tetris Worlds (2001).[108]

The original Elektronika 60 version of Tetris had no music.[155] Spectrum Holobyte's version of Tetris in the United States exoticized the Soviet origins through elements such as Russian music, including Pyotr Ilyich Tchaikovsky's "Trepak" from The Nutcracker and Reinhold Glière's "Russian Sailor Dance" from The Red Poppy. This approach differed from other versions of Tetris from other countries at the time: Mirrorsoft's Commodore 64 versions in Europe used an atmospheric soundtrack, and Sega's arcade version in Japan used a synthesized pop-influenced soundtrack.[156] Nintendo's versions for NES and Game Boy continued the pattern of using Russian music. The NES version uses Tchaikovsky's "Dance of the Sugar Plum Fairy" from The Nutcracker as Music A, with the Russian-influenced Music B and the mellow Music C having unclear origins.[157] The Game Boy version has the 1860s Russian folk tune "Korobeiniki" for Music A, an original composition by Hirokazu Tanaka for Music B, and the Menuet of Johann Sebastian Bach's French Suite no. 3 for Music C.[158] "Korobeiniki" has become primarily associated with Tetris as its main theme and would be used in most significant versions within the series,[159][156] as mandated by the Tetris Company guidelines.[21]

## Reception

### Sales

Sales of selected versions of Tetris Year  | Game  | Platform(s)  | Sales

|
|
|

1988  | Tetris (Spectrum HoloByte)  | PC  | 1 million[160]
Tetris (Famicom)  | Famicom  | 2 million[60]
1989  | Tetris (Game Boy) | Game Boy  | 35 million[161]
Tetris (NES) | NES  | 8 million[162]
1996  | Tetris Plus | PlayStation  | 1.53 million[163]
1997  | Tetrisphere | Nintendo 64  | 430,000[164]
2001  | Tetris Worlds | Multi-platform  | 1.81 million[lower-alpha 5]
2006  | Tetris DS | Nintendo DS  | 2.05 million[167]
2014  | Puyo Puyo Tetris | Multi-platform  | 1.4 million[132]
2020  | Puyo Puyo Tetris 2 | Multi-platform  | 293,000[lower-alpha 6]

In January 2010, EA Mobile and Blue Planet Software announced that the mobile versions of Tetris released 2005 had reached 100 million paid downloads, making it most-downloaded mobile game at the time.[170][117] In April 2014, Rogers announced in an interview with VentureBeat that Tetris totaled 425 million paid mobile downloads and 70 million physical copies.[171][172] Tetris is the second-best-selling video game series, totaling 520 million sales according to the Tetris Company.[173][174] The majority originate from paid mobile downloads, based on Rogers' figure from the 2014 interview.[172][175] Some publications consider Tetris the best-selling video game due to these figures,[174] though BBC disputes this claim due to differences between the versions, including on mobile platforms.[173] The most commercially successful version is the Game Boy version,[176] which at 35 million copies is among the best-selling video games.[161][177]

### Accolades

Tetris has garnered accolades and awards since its initial commercial release. The Spectrum HoloByte version won three Software Publishers Association Excellence in Software awards in 1989, including Best Entertainment Program and the Critic's Choice Award for consumers.[50] Macworld inducted Tetris into the 1988 Macworld Game Hall of Fame in the Best Strategy Game category. Macworld praised "the addictive quality" and said its "simplicity is bewitching",[178] and Compute! gave Tetris the 1989 Choice Award for Arcade Game, describing it as "by far, the most addictive game ever".[179] Entertainment Weekly named the NES version the eighth-greatest game available for sale in 1991, saying: "Thanks to Nintendo's endless promotion, Tetris has become one of the most popular video games."[180]

Tetris is considered among the greatest video games,[181] being ranked as such by Flux (1995),[182] Next Generation (1996 and 1999),[183][184] Electronic Gaming Monthly (1997),[185] GameSpot (2000),[186] Game Informer (2001 and 2009),[187][188] IGN (2007 and 2021),[189][190] Time (2012 and 2016),[191][192] GamesRadar+ (2015 and 2021),[193][194] Polygon (2017),[195] USA Today (2022 and 2024),[196][197] The Times (2023),[198] and GQ (2023).[199] Tetris has also been ranked as among the best computer games by PC Format (1991)[200] and Computer Gaming World (1996),[201] among the best video game franchises by IGN (2006)[202] and Den of Geek (2024),[203] and among the most influential games by GamePro (2007),[204] IGN (2007),[205] 1Up.com (2010),[206] GamesRadar+ (2013),[207] and The Guardian (2017).[208]

Tetris has been inducted into the "Hall of Fame" of the following publications: Computer Gaming World (1999),[209] GameSpy (2000),[210] GameSpot (2003),[211] and IGN (2007).[212] At the 2007 Game Developers Choice Awards, Pajitnov won the First Penguin Award, known afterward as the Pioneer Award, for pioneering casual gaming through Tetris.[213][214] Tetris was listed as part of the game canon, announced at the 2007 Game Developers Conference by Henry Lowood of Stanford University as a list of ten games to be considered for preservation by the Library of Congress, modeled after the National Film Preservation Board.[215][216] In November 2012, the Museum of Modern Art acquired Tetris, along with thirteen other video games, to display.[217] As part of the 2015 inaugural class, The Strong National Museum of Play inducted Tetris into the World Video Game Hall of Fame for its iconic nature.[218]

## Legacy

### Industry impact

Due to Rogers and Nintendo's belief in its potential for mass appeal, Tetris was the pack-in game and the primary game promoted for the Game Boy in the United States. The resulting public anticipation led Tetris to become the Game Boy's main draw,[85][219][220] with many, including non-gamers, buying the Game Boy specifically to play Tetris. It contributed to both the popularity of Tetris and the Game Boy,[221][88][222] with the bundle selling out its initial run of a million copies shortly after release.[85] This success established Nintendo's dominant position in the handheld gaming market, setting a standard that competitors struggled to replicate.[206][223][224] Several writers credit Tetris and Pokémon Red and Blue (1996) for the Game Boy's longevity, as it would not be discontinued until 2003.[222][85][225]

Tetris is influential in the genre of puzzle video games.[205][226] Commentators have considered Tetris an early example of a casual game.[lower-alpha 7] Wired deemed Tetris unique for its time, given its appeal to players regardless of gender and age,[228] and 1Up.com credits Tetris for establishing a market for puzzle video games with universal appeal.[206] Various common elements of puzzle games, such as managing pieces over a fixed screen, originated from Tetris,[205] and multiple clones have been created to replicate Tetris's popularity.[231] Video games influenced by Tetris include Nintendo's Dr. Mario (1990), Sega's Columns (1990), Compile's Puyo Puyo (1991), Taito's Puzzle Bobble (1994), and Capcom's Super Puzzle Fighter II Turbo (1996).[lower-alpha 8]

### Cultural impact

A man holding a trophyJonas Neubauer (pictured in 2010) won the inaugural Classic Tetris World Championship.

Tetris's cultural impact and recognition is widespread, being represented in a vast array of video game platforms, among other media such as architecture, art, and merchandise.[233][21][93] Tetris has been frequently referenced in pop culture, such as in The Simpsons, The Big Bang Theory,[93] Family Guy, Futurama, Office Space,[234] Muppet Babies, and Monty Python.[235] The game has also earned multiple Guinness records, such as the record for "largest architectural video game display", granted to a game of Tetris hosted on the side of the 29-story Cira Center in April 2014.[236] "Korobeiniki", a Russian folk song, has become widely associated with Tetris following its inclusion in the Game Boy version.[156] A 1992 Eurodance cover of "Korobeiniki" by Doctor Spin peaked at number six on the UK singles charts.[21][237] The "Tetris effect" refers to the phenomena of perceiving certain patterns in dreams and mental images following engagement in a repetitive activity such as playing Tetris.[238][239] The term was coined by Jeffrey Goldsmith in a 1994 article for Wired,[240] in which he compared Tetris to an "electronic drug".[241]

The background of Tetris, including its creation and legal battles in the late 1980s, has been documented multiple times.[242] David Sheff provided a comprehensive overview in his influential Nintendo history book Game Over (1994). Subsequent books that covered this topic include the non-fiction books Steven L. Kent's The Ultimate History of Video Games (2001), Tristan Donovan's Replay: The History of Video Games (2010), Dan Ackerman's The Tetris Effect (2016), and the graphic novel Box Brown's Tetris: The Games People Play (2016).[243][242] Tetris has also been the subject of documentaries including BBC's Tetris: From Russia with Love (2004) and the independent Ecstasy of Order: The Tetris Masters (2010).[243][242] Tetris, a film dramatization of the legal battles starring Taron Egerton as Rogers, premiered on Apple TV+ on March 31, 2023,[239] to positive reviews, according to Metacritic, and a viewership of 88,000 people, according to Samba TV.[244][245] Henk Rogers' memoir, The Perfect Game—Tetris: From Russia With Love, was published on April 1, 2025, to provide his perspective on Tetris's history following the film's release.[246][247]

Tetris is part of the competitive gaming scene, especially around the NES version.[248] Competitor Jonas Neubauer and his victory in the inaugural Classic Tetris World Championship (CTWC) in 2010 were the subjects of Ecstasy of Order: The Tetris Masters,[249] which helped popularized competitive gameplay of Tetris.[227] Competitors at the CTWC, typically adolescents, have used the CTWC to demonstrate advancements in the gameplay of the NES version. For example, gameplay techniques such as "hypertapping" and "rolling" have been used to help competitors to maximize their scores beyond level 29, which was previously deemed impossible to complete due to its speed.[250][251] Willis Gibson "beat" Tetris by playing NES Tetris until it crashed in a 40-minute livestream in January 2024, receiving significant media coverage for his achievement.[252][253]

### Research

The Tetris game has frequently been featured in academic research, including in psychology, computer science, and game studies.[3] By 2014, John K. Lindstedt and Wayne D. Gray, cognitive scientists of the Rensselaer Polytechnic Institute, had traced 133 scholarly papers across a variety of academic fields that used Tetris in their research.[254] Soviet clinical psychologist Vladimir Pokhilko was the first to use Tetris in clinical experiments, conducting them around 1985 at the Moscow Medical Center.[238][3] Prior to studying them, Pokhilko observed that distributed copies of Tetris to his colleagues impaired medical research due to their constant gameplay. Although he initially destroyed these copies, after new copies were reintroduced to his facility, Pokhilko used Tetris in psychological tests of his patients.[255]

In psychology, starting with the research of American psychologist Richard J. Haier in 1992,[256][257][258] Tetris has been frequently used in neuroimaging studies testing how gameplay affects the human brain.[259][254] For example, the near-transfer effects of Tetris on mental rotation is frequently researched, though research methods have varied widely and results have been contradictory.[260] Furthermore, Tetris has been studied as a potential form of psychological intervention, particularly regarding post-traumatic stress disorder (PTSD).[259] To date, playing Tetris as a valid form of imagery treatment for symptoms of PTSD is in an experimental stage and in need of further research. Nonetheless, several systematic reviews and meta-analyses of studies have demonstrated some evidence supporting its effectiveness in reducing intrusive memories, especially when combined with other interventions.[261][262][263]

In computer science, the Tetris game has been the subject of research papers analyzing how the tetrominoes affect gameplay.[264] Most analyze a traditional game of Tetris and do not account for features such as queue.[265] In 1992, John Brzustowski argued in his master's thesis for the University of Waterloo that it is impossible to play a traditional game of Tetris indefinitely,[266][267] a conclusion affirmed by Heidi Burgiel of the University of Minnesota in 1997, who attributed the inevitable end to the game's Z-shaped tetrominoes and calculated a hard cap of seventy thousand tetrominoes.[268][269] Partly accounting for the queue feature, in 2003 a trio of MIT students proved that the optimal strategy for playing a game of Tetris is NP-complete, meaning it is difficult to be solved by an algorithm within a reasonable time due to the game's complexity. This is true even if the player knew the complete sequence of incoming pieces.[270][271][272]

## See also

* Brain Wall and Blokken, game shows based on Tetris

## Notes

1. ↑ Pronounced ru or ru
2. ↑ The standard spelling in mathematics is tetrominoes, while the Tetris Company's trademarked spelling is tetriminoes.[2] This article uses the standard spelling for consistency.
3. ↑ An October 2020 press release announced that Blue Planet Software was renamed to Tetris.[118] To date, Henk is officially the president of the Tetris Company, while Maya is the president and CEO of Tetris, Inc.[119]
4. ↑ Attributed to multiple sources:[125][126][127][128][129][130]
5. ↑ Tetris Worlds sold 960,000 copies for Game Boy Advance[165] and 850,000 for PlayStation 2.[166]
6. ↑ Puyo Puyo Tetris 2 sold 93,000 copies.[168] Puyo Puyo Tetris 2: Special Price sold 200,000 copies.[169]
7. ↑ Attributed to multiple sources:[205][227][228][229][230]
8. ↑ Attributed to multiple sources:[205][206][226][232]

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2. ↑ Plank 2022, p. 271.
3. ↑ 3.0 3.1 3.2 3.3 Wolf, Mark J. P. (August 31, 2012). "Tetris". Encyclopedia of Video Games: The Culture, Technology, and Art of Gaming. Santa Barbara, CA: Greenwood Press. pp. 640–642. ISBN 978-0-313-37936-9. https://archive.org/details/isbn_9780313379369_2/page/640/mode/2up.
4. ↑ 4.0 4.1 Salen, Katie; Zimmerman, Eric (2003). Rules of Play: Game Design Fundamentals. Cambridge: MIT Press. pp. 143–144. ISBN 978-0-262-24045-1. https://archive.org/details/rulesofplaygamed0000sale/page/143/mode/2up.
5. ↑ 5.0 5.1 5.2 5.3 5.4 Ramos, Jeff (February 22, 2019). "Tetris Tips from a Seven-Time World Champion". https://www.polygon.com/guides/2019/2/22/18225349/tetris-strategy-tips-how-to-jonas-neubauer.
6. ↑ Ramos, Jeff (March 6, 2019). "Tetris Advanced Guide: T-spins, Perfect Clears, and Combos". https://www.polygon.com/guides/2019/3/6/18244590/tetris-t-spin-perfect-clear-combo-guide.
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8. ↑ 8.0 8.1 (in ja)Theスーパーファミコン (ja) (SoftBank) 4 (7): 72–73. 16 April 1993.
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10. ↑ Kent 2001, p. 377.
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12. ↑ Ackerman 2016, p. 32.
13. ↑ Temple 2004, 03:12–04:42.
14. ↑ 14.0 14.1 Pajitnov & Rogers 2023, 1:50.
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17. ↑ Donovan 2010, p. 200.
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35. ↑ Donovan 2010, pp. 203–204.
36. ↑ "Magyar Tetris Commodore 64-en" (in hu). https://prohardver.hu/teszt/magyar_tetris_commodore_64-en/a_szaz_kozott.html.
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49. ↑ Donovan 2010, p. 204.
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54. ↑ Kent 2001, pp. 378–379.
55. ↑ Ackerman 2016, pp. 138–142.
56. ↑ Ackerman 2016, pp. 143–145.
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58. ↑ Sheff & Eddy 1999, pp. 310–312.
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63. ↑ Ackerman 2016, pp. 167–169.
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68. ↑ Donovan 2010, pp. 206–207.
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70. ↑ Sheff & Eddy 1999, p. 318–320.
71. ↑ Ackerman 2016, pp. 208–210, 215.
72. ↑ 72.0 72.1 Ackerman 2016, p. 220.
73. ↑ Sheff & Eddy 1999, pp. 330–331.
74. ↑ Sheff & Eddy 1999, pp. 331–333.
75. ↑ Sheff & Eddy 1999, pp. 333–334.
76. ↑ Ackerman 2016, pp. 220–221.
77. ↑ Ackerman 2016, p. 219.
78. ↑ Ackerman 2016, p. 223.
79. ↑ 79.0 79.1 Ackerman 2016, p. 224.
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87. ↑ Ackerman 2016, pp. 226–227.
88. ↑ 88.0 88.1 Linneman 2018, 10:58–11:06.
89. ↑ Sheff & Eddy 1999, p. 339.
90. ↑ Ackerman 2016, p. 227.
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92. ↑ 92.0 92.1 Givens, Ron (May 3, 1991). "Soviet Blocks Invade America". Entertainment Weekly (64). https://archive.org/details/sim_entertainment-weekly_1991-05-03_64/page/12/mode/2up.
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98. ↑ 98.0 98.1 Rogers, Henk (June 6, 2014). "Tetris at 30: An Interview with the Historic Puzzle Game's Creator". Time (Interview). Interviewed by Matt Peckham. Archived from the original on June 6, 2014. Retrieved February 7, 2025.
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102. ↑ Lee, Helen (July 2, 1997). "Tetrisphere Gets Rolling". Archived from the original on May 4, 1999. https://web.archive.org/web/19990504104718/http://headline.gamespot.com/news/97_07/02_tetris/index.html. Retrieved February 8, 2025.
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104. ↑ Scullion, Chris (October 12, 2016). "The Tetris Games No One Remembers". https://www.redbull.com/gb-en/tetris-game-spin-offs.
105. ↑ Kohler, Chris (June 8, 2009). "Nintendo 'Vitality Sensor' Already Appeared on N64". Wired. https://www.wired.com/2009/06/nintendo-vitality-sensor/. Retrieved February 10, 2025.
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107. ↑ Linneman 2018, 31:11–31:34.
108. ↑ 108.0 108.1 108.2 Linneman 2018, 37:42–38:07.
109. ↑ Grannel, Craig (2021). "Queasy Spin". Retro Gamer: 78. https://archive.org/details/retro-gamer-100-playstation-games-to-play-before-you-die-3nd-edition/page/78/mode/2up.
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121. ↑ "『ぷよぷよテトリス』ダウンロードコンテンツ配信開始！" (in Japanese). February 6, 2014. https://puyo.sega.jp/topics/2014/0206_02/index.html.
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123. ↑ Perez, Daniel (December 12, 2014). "Tetris Ultimate Stacks onto PlayStation 4 and Xbox One Next Week". https://www.shacknews.com/article/87463/tetris-ultimate-stacks-onto-playstation-4-and-xbox-one-next-week.
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126. ↑ 126.0 126.1 126.2 Wilson, Jeffrey L. (February 25, 2019). "The Tetris Renaissance: This Console Generation's Most Unexpected Blessing". PCMag. https://www.pcmag.com/opinions/the-tetris-renaissance-this-console-generations-most-unexpected-blessing. Retrieved February 3, 2025.
127. ↑ Singletary, Charles (March 8, 2019). "CTWC Pros Offer Tips for Getting Better at Tetris 99". https://www.shacknews.com/article/110392/ctwc-pros-offer-tips-for-getting-better-at-tetris-99.
128. ↑ Miller, Ross (February 13, 2019). "Tetris Battle Royale Is Real and Free on Nintendo Switch Today". https://www.polygon.com/nintendo-switch/2019/2/13/18224042/tetris-99-nintendo-switch-free-download-release-battle-royale/.
129. ↑ Singletary, Charles (July 16, 2019). "Tetris Effect, No Longer a PS4 Exclusive, Hits Epic Games Store with VR support". https://www.digitaltrends.com/news/tetris-effect-pc-release-epic-games-store-vr-support/.
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131. ↑ "Puyo Puyo Tetris". Metacritic. Red Ventures. Archived from the original on December 8, 2024. Retrieved January 31, 2025.
132. ↑ 132.0 132.1 Hosoyamada, Mizuki (November 19, 2020). "Puyo Puyo Tetris 2 Interview: Producer Mizuki Hosoyamada on Sequels, 'Manzai Demos' and More". Siliconera (Interview). Interviewed by Graham Russel. Archived from the original on May 4, 2016. Retrieved December 5, 2024.
133. ↑ Byrd, Christopher (November 28, 2018). "Tetris Becomes Even More Addictive in Tetris Effect". Washington Post. https://www.washingtonpost.com/arts-entertainment/2018/11/28/tetris-becomes-even-more-addictive-tetris-effect/.
134. ↑ Holt, Kris (September 17, 2018). "Tetris Effect Drops a Color Bomb on Your PS4 November 9th". https://www.engadget.com/2018-09-17-tetris-effect-release-date.html.
135. ↑ Hall, Charlie (July 23, 2019). "Tetris Effect for PS4 Discounted, Out Now on PC". https://www.polygon.com/ps4/2019/7/23/20707102/tetris-effect-ps4-discount-price-sale.
136. ↑ Knezevic, Kevin (August 11, 2021). "Tetris Effect: Connected Coming to Nintendo Switch on October 8". https://www.gamespot.com/articles/tetris-effect-connected-coming-to-nintendo-switch-on-october-8/1100-6495048/.
137. ↑ Soto, Fran (January 20, 2023). "Tetris Effect: Connected Comes to PS5 with PSVR2 Compatibility". https://hardcoregamer.com/news/tetris-effect-connected-comes-to-ps5-with-psvr2-compatibility/436098/.
138. ↑ Alexander, Julia (February 13, 2019). "Tetris is Now a Battle Royale Game with Tetris 99". https://www.theverge.com/2019/2/13/18224020/tetris-99-battle-royale-nintendo-switch-fortnite.
139. ↑ Craddock, Ryan (June 28, 2019). "Tetris 99 Will Soon Have a Tetris Battle Royale Rival". https://www.nintendolife.com/news/2019/06/tetris_99_will_soon_have_a_tetris_battle_royale_rival.
140. ↑ Doolan, Liam (April 25, 2019). "9.8 Million Switch Owners Have Signed Up to the Online Service and 2.8 Million Have Played Tetris 99". https://www.nintendolife.com/news/2019/04/9_8_million_switch_owners_have_signed_up_to_the_online_service_and_2_8_million_have_played_tetris_99.
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142. ↑ Gartenberg, Chalm (January 23, 2020). "Tetris Returns to Android and iOS after EA's Version Shuts Down". https://www.theverge.com/2020/1/23/21078481/tetris-n3twork-android-ios-new-apps-ea-shutdown-puzzle-game.
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219. ↑ Kindy, David (July 29, 2019). "Thirty Years Ago, Game Boy Changed the Way America Played Video Games". https://www.smithsonianmag.com/innovation/thirty-years-ago-game-boy-changed-way-america-played-video-games-180972743/.
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## Bibliography

### Books

External video Presentation by Dan Ackerman on The Tetris Effect, September 12, 2016, C-SPAN

* Ackerman, Dan (2016). The Tetris Effect: The Game that Hypnotized the World. New York: PublicAffairs. ISBN 978-1-61039-611-0. OCLC 943694339. https://archive.org/details/tetriseffectgame0000acke.
* Donovan, Tristan (2010). "A Plane to Moscow". Replay: The History of Video Games. East Sussex: Yellow Ant. pp. 199–211. ISBN 978-0-9565072-0-4. https://archive.org/details/replayhistoryofv0000dono/page/198/mode/2up.
* Goldberg, Harold (2011). "Falling Blocks, Rising Fortunes". All Your Base are Belong to Us. New York: Three Rivers Press. pp. 74–89. ISBN 978-0-307-46355-5. https://archive.org/details/allyourbasearebe00gold_0/page/74/mode/2up.
* Kent, Steven L. (2001). "Tetris". The Ultimate History of Video Games: From Pong to Pokémon and Beyond—The Story Behind the Craze That Touched Our Lives and Changed the World. New York: Three Rivers Press. pp. 377–381. ISBN 978-0-7615-3643-7. OCLC 47254175. https://archive.org/details/ultimatehistoryo0000kent/page/377.
* Loguidice, Bill; Barton, Matt (2009). "Tetris (1985): Casual Gaming Falls Into Place". Vintage Games: An Insider Look at the History of Grand Theft Auto, Super Mario, and the Most Influential Games of All Time. Amsterdam: Focal Press. pp. 291–301. ISBN 978-0-240-81146-8. https://archive.org/details/vintagegamesinsi0000logu/page/290.
* Plank, Dana (July 25, 2022). "Tetris". Fifty Key Video Games (First ed.). New York: Routledge. pp. 268–274. doi:10.4324/9781003199205. ISBN 978-1-003-19920-5.
* Sheff, David; Eddy, Andy (1999). "From Russia With Love". Game Over: Press Start to Continue. Wilton, CT: GamePress. pp. 295–348. ISBN 978-0-966-96170-6. OCLC 1190934258. https://archive.org/details/0966961706/page/295.

### Video documentaries

* Linneman, John (November 14, 2018). DF Retro: Tetris!. Digital Foundry. Retrieved December 7, 2024 - via YouTube.
* Pajitnov, Alexey; Rogers, Henk (April 26, 2023). Unsolved Tetris Mysteries With Creator Alexy Pajitnov & Designer Henk Rogers. Ars Technica. Retrieved December 7, 2024 - via YouTube.
* Temple, Magnus (2004). Tetris: From Russia with Love. BBC.

## Further reading

* Gerasimov, Vadim. "Tetris Story". https://vadim.oversigma.com/Tetris.htm.
* The Creation of Tetris. BBC World Service. BBC. December 29, 2012.

## External links

| Wikimedia Commons has media related to Tetris.

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* The MS-DOS version of Tetris can be played for free in the browser at the Internet Archive

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Tetris

Main games|

* Tetris (Atari)
* Tetris (NES)
* Tetris (Game Boy)
* Battle Gaiden
* Tetris & Dr. Mario
* Plus
* The Grand Master
* Magical Tetris Challenge
* 64
* The New Tetris
* Worlds
* Evolution
* Zone
* Splash
* Friends
* Party
* Ultimate
* Puyo Puyo Tetris

Portable games|

* Tetris (Game Boy)
* 3D
* DS
* EA Tetris
* Axis

Variant games|

* Blockout
* Welltris
* Hatris
* Faces
* Wordtris
* Tetris 2
* Tetris Attack
* TetriNET
* Tetrisphere
* BreakThru!
* Pokémon Tetris
* Tetris Giant
* Tetris Effect
* Tetris 99

Related|

* Alexey Pajitnov
* Tetris effect
* Tetromino
* The Tetris Company
* Tetris Online, Inc.
* Classic Tetris World Championship
* Korobeiniki

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