Need help - Co-Op games?

As some of you know, we like to play other games together. This thread is about compiling a list of Co-Op games we can try. They can be FPS, RTS, anything as long as it has a good Co-Op mode or Multi-player.

Make some suggestions here.

COD
Splinter Cell (2 players on Co-op)
Rainbow 6
Supreme Commander
Age of Empires
Unreal Tournament

BF2 mods:
Omnicide mod (zombie mod, pretty fun, alternative to left for dead)
Eve Of Destruction - for those who like the Vietnam Era
Forgotten Hope - WW2 mod, with Brits, awesome!!

Other games:
Red Orchestra - fantastic, but old, WW2 game realism at its best
-Various mods for Red Orchestra bring in Normandy and other stuff - also awesome
Just realised i do have Company of Heroes!

men of war (only 4 player coop, but very interesting)

add to the list the games we can obtain and PLAY by other means haha.. if you catch my drift

Hornsby wrote:

add to the list the games we can obtain and PLAY by other means haha.. if you catch my drift

You just need to know where to look. I wouldn't know...

oh I Mean if people are to download games, it would be good if they can do Co-Op mode too. some you can just like Left for dead, others ya can't ;(

ill look for some.