21. Left 4 Dead 2

Developer: Valve

Srvival Horror FPS

Human vs. Zombie

For a game about the dead, it's sure got life in it.

What’s there not to like about Left 4 Dead 2? You and up to three friends must fight through a campaign, which is composed of five maps filled with zombies and “special infected” that want nothing more to kill you. There will be weapons, medical supplies, explosives, and now you will have access to melee weapons.  

There are also new ranged weapons and boosts, as well as four new survivors and new maps to choose from. You can play against other players across a whole campaign, or five maps, trying to get higher scores. You’ll need to stick together for the best chance at surviving through each map. It’s tons of fun on multiplayer, either breaking up a great team by ambushing them as special infected or either frantically scrambling to help out your team member when you’re on the receiving end of the ambush.

Bring on the Apocalypse baby!!

You and your team better be on high-alert, because any moment could mean your team will be swarmed with a horde of zombies. This game just gives off an adrenaline rush and will have you freaking out and fighting for your life many times. The scenery also contributes to the somber mood of the game. You won’t find a better coop game that involves zombies.

Left 4 Dead 2