Features:
- Co-op survival horror gameplay for up to six players
- Persistent Perks system, enables players to convert their in-game achievements into permanent improvements to their character’s skills and abilities
- Nearly 200 Steam Achievements, including seasonal special events for free!
- Slow-motion “ZEDtime” to better watch those violent creature deaths, even in multiplayer
- Ten different monster types trying to eat your face off, armed with everything from teeth and claws, to chainsaws, chain-guns and rocket-launchers
- 33+ weapons for the players to chose from, ranging from knives and fire-axes to pump shotguns, rifles and a flamethrower
- Open, non-linear play areas enable the player to choose where to fight the hordes
- Solo game mode for offline play
- Support for Steam Friends and other Steamworks(TM) features
- Includes SDK for the creation of new levels and mods 100s of community-made maps now available!
- Includes all previously released DLC and a unique female character!