Overview
Contagion is a survival horror first-person shooter video game, developed and published for PC by American independent studio Monochrome. It is the spiritual successor to Zombie Panic! Source. The game was mostly self-funded of its development, but with the support of others via a successful Kickstarter campaign, it was able to be released on Steam as an Early Access title. Contagion released on October 25, 2013 as a Steam Early Access title and was published as full release on April 11, 2014.
Gameplay
Contagion is a multiplayer focused game with three different game modes; Hunted, Escape, and Extraction. There is also a beta game mode called Flatline.
Hunted, which supports up to 16 players, is a free-for-all "deathmatch" game mode in which players fight each other, while A.I.-controlled zombies wander the level and serve as an environmental hazard. When a player is killed, they respawn as a zombie and can participate alongside the A.I.-controlled zombies in attacking the surviving players. The goal of the game is to be the last living player.
Escape is a cooperative game mode in which a team of up to 8 players is tasked with progressing through a level, fighting through zombies while completing various mission objectives in a linear order with the ultimate goal of escaping the map.
From Wikipedia (CC BY-SA 4.0).