How many different Nintendo systems are there

Well the ones I know are; Gameboy, Gameboy Color, Gameboy Advance, Gameboy Advance SP, Nintendo Entertainment System, Super Nintendo Entertainment System, Nintendo DS, Nintendo DS Lite, Nintendo DSi, Nintendo DSi XL, 3DS (Coming in March, 2011), Nintendo 64, GameCube, Wii. That makes a total of...



"13"Those are the ones I know. I think there is a few more...