The Nintendo DS (also known as DS, NDS, or the DS Phat) is a handheld system from Nintendo. Development began in mid-2002 and it was released in 2004/2005. It has a successor called the Nintendo 3DS, the very first 3D handheld, which also plays "DS" games. The DS is a small, nearly pocket-size fold-up machine that lets people play video games. The games are stored on small cartridges which are like memory card chips from digital cameras. Some games, such as "Super Mario 64 DS", were released on the same day as the original "DS".