#7 Left 4 Dead 2
Left 4 Dead 2, Valve’s co-op FPS that changed the face of zombie survival, is an award-winning game that places its emphasis on teamwork and tactical cleverness, allowing players to come away with their own emergent stories.
The game’s five original campaigns, players must work together to reach safehouses, survive onslaughts, and reach other goals without succumbing to the wrath of the “infected,” each of whom have their own special, nefarious abilities.