starcraft broodwar.

i once got up at 5 am and played until 11 pm with 10 minute food breaks.

Either Tetris DS or X-COM: UFO Defense.

Probably "Games Factory".

If i'm going to only be able to play one game for the rest of my life it better be one that gives me a lot of choices and options. In otherwords, one that lets me build my own games.

It would have to be... counter strike.

Maybe Gran Turismo 5 once it comes out.

Might as well choose the game I've put like a 1000 hours into...

Counter-Strike

Starcraft, I can't think of anything that could match its replayability.

The Legend of Zelda: Collector's Edition. I would just cycle through all of them over and over again.

i would choose Mario 64 ds

Starcraft, it was that or Call of Duty 4