Killing Floor 2 is a first-person shooter video game developed by Tripwire Interactive. It is a sequel to the 2009 video game Killing Floor. An early access version of the game was released for Microsoft Windows via digital distribution service Steam on April 21, 2015. The full version is scheduled for release in 2015 on Windows, Linux, and PlayStation 4. The game utilizes Epic Games' Unreal Engine 3. Killing Floor 2 is a first-person shooter video game, that can be played alone or cooperatively with up to six players. Gameplay consists of players fighting through waves against zombie-like specimens, known as Zeds. As waves pass, the enemy count will increase and different enemy types are introduced with the final wave culminating in a boss fight. Players are equipped with melee weapons and firearms, a healing syringe, and a welder used to block passages. Once a player dies they will not respawn until the end of the current wave; the mission is failed if all players are dead simultaneo...