Contagion

First-person zombie survival shooter with randomized rounds and co-op

Monochrome, Inc · Released Oct 25, 2013

Reviews: Mostly Positive; 73% of 16K
Recent reviews: Mixed; 56% of 23 in 30 days
Playing now: 15; right now
Steam Deck: Verified
Last update: 10 months ago; Nov 8, 2025

What is Contagion?

Set during a zombie apocalypse, this first-person survival shooter plays out in rounds with changing conditions. You fight undead with guns and melee weapons while trying to escape, extract civilians, or hunt other players, depending on the mode.

For you if...

+you like tense co-op and careful shooting against zombies
+you enjoy rounds that change between playthroughs
+you want both cooperative survival and PvP modes

Not for you if...

−you want fast-paced action rather than slow exploration
−you prefer clear directions and little backtracking
−you want a forgiving solo experience

What players say

73% of 15,737 reviews are positive · 56% of 23 in the last 30 days

Players praise the tense atmosphere and co-op with friends. They complain about sparse online activity, crashes, and trouble setting up lobbies; some say recent updates have made parts of the game worse.

Screenshots and trailer

Contagion system requirements

As published by the developer.

Minimum

OS: Windows® 7 32/64-bit / Windows® 8 32/64-bit / Windows® 10 32/64-bit
Processor: 2.4 GHz Intel Dual Core Processor
Graphics: DirectX® 9 compatible video card with 256 MB, Shader model 2.0. ATI X800, NVidia 6600 or better
Memory: 4 GB RAM
Storage: 10 GB HDD Space
Notes: Broadband Internet Connection

PC version details

DRM, required accounts, controller support and Steam features.

DRM: None declared on Steam
Controller: Keyboard and mouse
Platforms: Windows
Achievements: 165
Steam features: Workshop, Cloud saves, Family Sharing, Trading cards

Steam Deck: Verified

All functionality is accessible with the default controller configuration
Shows Steam Deck controller icons
In-game text is legible on Steam Deck
Default graphics settings perform well on Steam Deck
External controllers are not supported for the primary player

Multiplayer and co-op

Languages

Full audio: English. Text only: Simplified Chinese, Traditional Chinese, Portuguese - Brazil, Korean, Turkish, Italian, Russian, Japanese, Ukrainian, Spanish - Spain.