The Game That Is The Reason You Own A 360

What game would you say defines the reason you bought an X-Box 360?

My vote goes to Elder Scrolls IV: Oblivion.  It's deep, a massive quest and above all, the downloadable (or purchasable if you bought the Game of the Year edition) Shivering Isles stuff is great, and every quest is worth doing to see what delightfully maniacal words come out of Sheogorath's mouth.  Example:

"Brain pie?  Delectible!  Care to contribute?"

I don't own a 360. So... yeah....

I got my xbox 360 for gears, but kept it for tf2 and rock band.

Luckily, the 360 isn't defined by one game, lots of good-ones come out for it, and that's why I chose it over the other consoles.

Quote:

That's true, but sometimes you need a game to sway you from one console to the other.

I actually bought a 360 for halo 3 and Assasin's creed, although they both turned out to be not that great... Bought Mass Effect afterwards, thought that was a much better game.

Forza, Gears, Halo and Bioshock all made it no-brainer for me. Plus, I love Xbox Live and the Arcade.

Metal gear solid 4

...Oops

gears, not halo. yay gears 2!

Forza made it for me...Gears was really more consolation.

I'm coming back for Endwar and Bad Company tho.