A lot:
NES, SNES, N64, Gameboy, GBA, Wii, DS, Gamecube, Wii
Megadrive, 32x addon, Sega Mega CD addon, Dreamcast,
ps1, ps2,
Atari 2600, Jaguar,
Wonderswan Color, and the greatest handheld ever: Neo Geo Color Pocket
Face the future.. Gamecenter ID: nikkom_nl (oh no he didn't!!)