Any suggestions for a good xbox game that me and my buddy can play coop. We have played through Halo and Halo 2 countless times through the campaign. Looking for somewhat of an action game where we can fight side by side.

x-men legends 2?

Doom 3 has a coop mode over Live, but it is Live only I think.

How about Metal Slug 3? Tough as nails.

Star Wars Battlefront 2?

Baldur's Gate 1 and 2

I think The Warriors has co op. Fun game.

The Warriors does have a coop mode, a friend and I are playing through it. The only thing I dislike so far is the camera system, which splits the screen when you get too far away from each other. It's a little disorienting when it happens. Other than that, it's good fun, I'd recommend it as well.

Both X-men Legends games are big fun playing co-op. And the first one is only $20 now.

X-Men Legends is a FUN game. Warriors was really fun...single player at least. Gauntlet games are always good too.

Timesplitters 2 and 3 both offer co-op, IIRC.

Gauntlet was fun with my girl.