Killing Floor 2 was fully released on November 18, 2016 (following an earlier early access period), and supports cooperative multiplayer for up to 6 players online, with a 12-player mode available for PvP. It is a wave-based first-person shooter focused on surviving increasingly difficult hordes of bioengineered enemies known as Zeds, emphasizing class-based teamwork, weapon specialization, and economy management between rounds. The game features Survival (core wave-based mode), Weekly Outbreak (modifier-based challenges), Endless (continuous escalating waves), and Versus Survival (asymmetrical PvP where one team controls Zeds), combining tight gunplay, perk progression, and coordinated team defense.