The Nintendo DS (sometimes abbreviated NDS or simply DS) is a dual-screen handheld game console developed and manufactured by Nintendo, released in 2004. The name "DS" is short for both 'Dual Screen' and 'Developers' System'. The DS has a horizontal clamshell design, similar to some Game & Watch video games, and the Game Boy Advance SP. A redesigned model, the DS Lite, was released in 2006. The codename for this system during development was "Project Nitro". In 2013, the Nintendo DS has officially been discontinued; however, much of its games are still playable via its successor, the Nintendo 3DS.