nes (both US models)
snes (both US models)
n64
gamecube
gameboy
gameboy pocket
gameboy advance
nintendo ds
virtual boy (though one eye piece doesn't work, making it even worse for my eye!)
sega master system
genesis,1,2,3, sega cd 2, 32x
saturn
dreamcast
pico (my little sister loves it)
gamegear
atari 2600 (several models and variations)
5200 2 port (saved by the power of wico command controllers)
7800
xegs
lynx
jaguar
turbo grafx 16
neo geo color
intellivision(1,3, sears)
aquarius (I don't care if it's technically a computer even when it was released it couldn't run anything)
colecovision
microvision
3do
odyssey 2
rca studio 2 (worst system ever)
there I think that's everything
though if you also count cartridge based computers
atari 600xl, ti-83, tandy coco 2, c64
well and ofcourse a neo geo