Killing Floor 2 is a 2016 co-op first-person shooter developed and published by Tripwire Interactive. Set in continental Europe after a bioengineered outbreak, it throws players into brutal battles against mutant creatures known as Zeds. The game supports solo play, six-player co-op, and a 12-player Versus Survival mode, with wave-based combat, class perks, gore-heavy action, and a strong focus on teamwork, weapons, and survival against escalating enemy hordes.