Killing Floor

In London, a scientific project goes wrong and causes a massive invasion of cloned zombies who invade England, welcome to your new playground! This game is played only in Co-Op, the goal is to kill the various zombies thrown at you wave by wave, increasing in difficulty each time until the arrival of a massive zombie villain.

Different classes are available, each with various and unique abilities to help your party as much as possible. Between each wave you have access to a merchant, use him to buy new weapons to kill the stronger opponents coming at you.