Left 4 Dead 2

Resident Evil 6 PC
The time has come for two of the greatest zombie shooting franchises, Resident Evil 6 and Left 4 Dead 2, to join hands and sing kumbaya. Wait no, that's wrong. They'll be shooting for the head.
Left 4 Evil
The worlds of Capcom's Resident Evil 6 and Valve's Left 4 Dead 2 collide this April.