Good Multiplayer Games- Online and Offline

What are some good multiplayer games, co-op and competitive.what are some good ones, I was thinking about getting portal 2???

What are some good multiplayer games, co-op and competitive.what are some good ones, I was thinking about getting portal 2???

King_Diddy31

Mortal Kombat is great for tag team co-op play, or challenge your friends.

thanks :)

I think Saints Row 2 and Dead Rising 2 are good multiplayer CO-OP games.