Everyone check out this new game called, "Contagion" by Monochrome Games. Contagion is a Cooperative Zombie Survival Horror FPS game built on a heavily modified version of Valve's Source Engine. Heavily influenced by Zombie Panic Source, and also claiming to be the "Spiritual Successor". Trying out the Roanoke PD map, but the game has various game modes to try out!
Eugene, Marcus, and other Survivors return in the spiritual successor of the popular Half-Life 2 Modification Zombie Panic: Source!
Contagion is a cooperative survival horror FPS built on the latest Source Engine where players are forced to watch their ammo and aim carefully otherwise be overrun by the zombie hordes. Players will face traditional zombies as well as former teammates who have been turned themselves and where friend becomes foe fueling the carnage to come.
Roanke PD: Escape
Aurora Estates: Hunted
Aurora Estates: Extraction
Cyprus Park: Hunted
You can find more info about the game here: