What shooting/war, or action-filled game should I buy for Xbox 360?
Fallout 3 is awesome- I played it on PS3. Like asiansticks said, it lasts longer than most games, and even when you 'beat' the game, there's still tons more you can do, and there's lots of replay value. Gears is pretty popular, but I didn't really like it much. I've also heard that Halo 2 is the best of the Halos, so that would probably be a good one to get. Also, COD4 and COD5 are both very good.
Call of Duty 5
the new call of duty
Saint row 2 (the first ones quite bad but I've heard good things about the 2nd 1)
Medal of Honor(not even in the same league as CoD but its ok, I guess)
Fallout 3, because you can play it for a long time. I can't think of anything else that might be worth it...all the games are really short these days...
Heard mass effect was good, and had a lot of play hours built in.
army of 2
new call of duty
Fallout 3 and elder scrolls 4: oblivion and mass effect
grand theft auto !
Gears Of War 2
call of duty .