Game you played the most on a system (1 Viewer)

[Fish Sauce]

Game Boy: Pokemon Blue
Game Boy Colour: Pokemon Gold
Game Boy Advance: Advance Wars
DS: Mario Kart
NES: Super Mario 3
SNES: Yoshi's Island
N64: Mario Kart
Gamecube: Smash Bros. Melee, Timesplitters 2
Wii: Zelda: Twilight Princess
PC: Worms 2

Nintendo, nice.

For me I'd probably say:
N64 - Perfect Dark (although both Zelda games would probably come close)
Gamecube - Super Smash Bros. Melee
Wii - Zelda: Twilight Princess (need to get back to that in the holidays, haven't played in ages)
PC - The Sims (played this so much about 5 or 6 years ago that I don't think I'll ever catch up)
Game Boy Pocket - Pokemon Blue/Gold
Game Boy Advance - Golden Sun