I've played through mass effect, halo 3, bioshock, and assassins creed what other good games are for xbox 360?

Gears of War, Armored Core 4, Crackdown, Call of Duty 4, The Orange Box, Timeshift, and Oblivion are all great games.

You might like Far Cry 2. Its a pretty good game. Its an Fps with great visuals and pretty good game play. I would also recommend Call of Duty World at War. Good story and can't go wrong if you like online play. And My final recommendation is GTA4. I think it is the best game out for 360. I got it when it first came out and i still play it to this day.

Gears of War is awesome. The Orange Box is also good. Oblivion is cool if your are into role-playing games. As mentioned Call of Duty 4 is really good too. And well it hasn't come out yet, but GTA IV is coming out April 29 and that is always a good way to go.

DEFINATLEY TRY COD4 (call of duty 4). Some people have said that it is better than Halo 3 and i think so too. It has a none stop action campaign mode( 10 or so Hrs ) and AMAZING multiplayer with so much depth- unlocking guns/leveling up.

Its a MUST buy.

Burnout Paradise

Call of Duty 4

Smackdown vs Raw 2008: ECW Invades

You should play Gears of war , Devil may cry 4 (but out soon) nba 2k8 if you like basketball game and Mass Effect

If you have Xbox Live then "gears of war" is the best way to go. Everyone has to play that game. :D

I like Rainbow Six Las Vegas -- they are coming out with a second in April too....it took a little getting used to but was hella fun to play expecially with a friend.

besides those there are really no good games for xbox 360 cept call of duty which is still better on ps3

yeah definitly cod 4