Heres a Listing of somegames that we play so you know for a future reference.

Battlefield 2 And Most Mods

Battlefield Bad Company 2

Call Of Duty 4: Modern Warfare

Call Of Duty 5: Modern Warfare 2

Call Of Duty: World At War

Day Of Defeat Source

Left 4 Dead

Left 4 Dead 2

And many more includeing mods..