Outbreak (50% off on Steam through April 4th!) is an intense hardcore cooperative survival horror experience. Harkening back to the days of Resident Evil and Silent Hill, Outbreak challenges you and other survivors to escape the quarantine zone. Outbreak has had a massive amount of content and features added since launch, including overhauled controls, the new single-player Nightmares narrative mode, optional partner AI and much more! Grab a few friends and experience the zombie apocalypse!
All modes in Outbreak are playable in single-player (even offline) and many are available in up to four player online co-op (with voice chat!). Experience the story in the co-op campaign, face off again endless waves of the undead in Onslaught mode and then experience narrative single-player short-stores in the Nightmares mode. Outbreak has a wealth of content and scales based on the number of players in the game. Hosted on a cloud-based multiplayer service, there is NO P2P connection when playing with friends, so NO firewall issues!