The Nintendo DS is a handheld video game system created by the Japanese video game company Nintendo and released on November 21, 2004. A Lite version was released in 2006. The system consists of two screens that can be folded together to put the system to sleep or transport it more easily. The bottom of the two screens is a touch screen and is surrounded by buttons used to interact with the system. The DS is able to connect to other DS consoles nearby wirelessly, and it was able to connect online over longer distances using a service called the Nintendo Wi-Fi connection service until this service was discontinued in 2014[1]. In addition to running DS-specific game cartridges, it is also able to play Game Boy Advance cartridges. The success of the DS led Nintendo to release versions with improved hardware; these versions included the DS Lite, the DSi, and the DSi XL. As of the end of June 2023, Nintendo has sold 154 million DS units.[2] The DS was eventually succeeded by the Nintendo 3DS, a DS with improved hardware and the ability to display images in 3D.