most played game of all time on ant console?

All-time- The orignial Mario Bros, Nes

(since this is an Xbox 360 thread) - Halo 2, Xbox

Gears Of War is

I have played that game for countless hours it's ridiculous really.

With all the flaws that game has it is a very addicting game.

On a home console -- easily Gran Turismo 2 for Playstation, way too many hours on that game. I've never played a game like a played that one.

On a handheld -- Pokemon Blue Version for Game boy. I caught 146 Pokemon, and had most of them trained to level 70 or above.

On the PC -- Command and Conquer Red Alert, Command and Conquer Red Alert 2, and Roller Coaster Tycoon. I don't know why, but I loved these games.

I can't play games for as many hours as I used to, I probably put most of my time into multiplayer now too.