What are some good Co-Op games for Xbox 360?

Definitely go with COD BO2. The zombies is always fun with friends, making fun of them, and just really having a good time. Imma noob at that but my friends are all good so it is always fun playing with them. Also the online multiplayer for that game is always fun too. A change from different games.

I would not recommend battlefield for a co-op. The missions suck and are all point less.

Assassins Creed 3 multiplayer is simply amazing. Trying to "assassinate" your friends and make them pissed off is always a fun thing doing right....cuz there is always that one guy who rages.

If yo are into sports, madden or nba 2k is always an option. friends against friends will always keep you interested.

Saints Row 2

CoD zombies

Borderlands

Halo

Gears of War

Dead Rising 2

MGS Peace Walker

F1 2012

Left 4 Dead

Army of two series

Borderlands series

Crackdown series (Xbox exclusive)

Dead island

Fable 2&3 (Xbox exclusives)

Gears of war (Xbox exclusives)

Halo series (Xbox exclusives)

Left 4 dead series (Xbox exclusives)

Portal 2

Probably a lot more I didn't mention...

If your looking for a challenge, either call of duty, or battle field.

If your looking for a fun time, i 100% Reccomend Saints row 3