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Contagion

Contagion

Contagion isn't your average Zombie Shooter but instead takes a more realistic and different approach to the popular genre with unique characters, environments, weapons, items, and a built in system that makes every round completely unpredictable with resources, objectives, and paths ever changing.

Released Oct 25, 2013 Developer Monochrome, Inc Platforms Windows ZombiesPost-apocalypticCo-opHorrorLevel Editor
View on Steam ↗ $9.99 (US · as of 2026-07-26)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Data as of 2026-05-20.

72.7%positive15,428 reviews

What reviewers agree on

Praised
Criticised
Bar length = how many of the 70 reviews raise the point On criticised points, the pale part = reviewers who still recommend the game Select a point to see the exact counts and what reviewers wrote.

Counted across 70 English reviews, sampled to match this game's 72.7% positive rating · as of 2026-05-20

Recommended · 0 found this helpful

“The game in general is a fun game solo or with friends. However the game does tend to crash randomly without warning losing your progress. I find that actually really annoying. When playing coop with friends you will also encounter frequent disconnections from the coop play…”

— a player, Steam review · 27 hrs played
Recommended · 0 found this helpful

“i found some zombies but then died to some armoured ones”

— a player, Steam review · 1 hrs played
Not recommended · 21 found this helpful

“nah they fkd ts up with that new update a few months ago. anyone who bought ts and is wondering why the trailer is completely different than the game: go to your betas tab for the game and switch to "old-engine", you'll have a copy of the game that has split screen, mods work,…”

— a player, Steam review · 30 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. Live count fetched 2026-07-23 23:46 UTC · history via SteamCharts.

17playing at last check
2624-hour peak
7,498all-time peak
0 500 1k 2014 2016 2018 2020 2022 2024 2026 685 avg · Aug 2014

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-07-25.

165achievements
0.2%median completion
0.1%rarest: Look mom, It's a pie!
32.2% of players 29.5% of players 9.1% of players 7.6% of players 5.6% of players 4.7% of players 4.3% of players 3.3% of players 2.9% of players 2.6% of players 2.3% of players 1.8% of players 1.7% of players 1.6% of players 1.6% of players 1.5% of players 1.4% of players 1.3% of players 1.3% of players 1.3% of players 1.2% of players 1.2% of players 1.2% of players 1.1% of players 0.8% of players 0.7% of players 0.6% of players 0.6% of players 0.5% of players 0.5% of players 0.5% of players 0.5% of players 0.4% of players 0.4% of players 0.4% of players 0.3% of players 0.3% of players 0.3% of players 0.3% of players 0.3% of players 0.3% of players 0.2% of players 0.2% of players 0.2% of players 0.2% of players 0.2% of players 0.2% of players 0.2% of players 0.1% of players 0.1% of players 0.1% of players 0.1% of players 0.1% of players 0.1% of players 0.1% of players 0.1% of players 0.1% of players 0.1% of players 0.1% of players 0.1% of players 32.2% 0% most earned rarest
Almost everyone has
32.2%Ankle Biter — Remove both legs from a zombie.
29.6%Hoarder — Use your Roar to build a horde of 15 or more zombies.
29.5%One Of Them — While infected, survive long enough to let it run it's course and turn you into one of the undead.
Rarest badges of honor
0.1%Look mom, It's a pie! — Deploy 5 upgrade packages in total
0.1%Santa is Never Coming to Town — Complete Montclair, on Normal or Higher Difficulty in our Panic Game-mode.
0.1%That's Not a Microwave Casserole... — Hidden achievement

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-11. Steam prices vary by region — always confirm your local price on Steam.

$9.99current · sampled 2026-07-26 08:39 UTC
$9.99lowest since tracking began2026-07-11
US9.99 USD
EU7.99 EUR
UK6.99 GBP
Australia14.50 AUD
Canada10.99 CAD
Japan980 JPY
Brazil19.99 BRL
China36.00 CNY

Regional prices at last sample, in local currency — Steam sets each region's price independently.

Brazil≈$3.9 China Japan Canada EU UK US Australia≈$10

Cheapest → most expensive, converted to USD at ECB reference rates (2026-07-24). Relative comparison only.

$0 $10 $20 07-11 07-13 07-16 07-19 07-22 07-26

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Nov 08, 2025
Small patch: 2.3.0.1.7

Changelog Updated ce_laststop_08 Fixed Akira elevator Fixed detonator handle spawning inside an object Fixed cam numbers not showing up properly Updated ce_laststop_09 Updated the elevator area, made

Aug 19, 2025
Quick Hotfix: 2.3.0.1.6

Changelog Fixed Solo/Lobby games not applying their settings to auto.cfg file, which caused some variables to reset on next map change Updated ce_laststop_08 Fixed cam numbers not showing up properly.

Aug 05, 2025
Quick Hotfix: 2.3.0.1.5

Changelog Fixed the boat rotation on cp_broadway Fixed the train escape sequence on ce_downtown_03 not working properly Updated server tickrate for NextBot AI Fixed ce_biotec, ce_biotec_christmas, ch_

Aug 01, 2025
Quick Hotfix: 2.3.0.1.4

Changelog Fixed the player collisions, the player should no longer get stuck on everything Fixed money being dropped by zombies in Flatline going crazy by having a huge velocity Updated Volt Physics E

Jul 27, 2025
Quick Hotfix: 2.3.0.1.3

Changelog Fixed NextBot AI (Zombies) causing stuttering and crashing problems. Angelscript API Official Discord Patreon

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Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-05-20.

GenresAction, Adventure, Indie
Player tagsZombies · Post-apocalyptic · Co-op · Horror · Level Editor · FPS · Moddable · PvE · First-Person · PvP · Survival Horror · Shooter (SteamSpy community voting)
FeaturesSingle-player · Multi-player · PvP · Online PvP · Co-op · Online Co-op · Steam Achievements · Steam Trading Cards
LanguagesEnglish * , Simplified Chinese, Traditional Chinese, Portuguese - Brazil, Korean, Turkish, Italian, Russian, Japanese, Ukrainian, Spanish - Spain *
Achievements165
Estimated owners1,000,000 – 2,000,000 (SteamSpy)
Official sitehttp://www.contagion-game.com
Minimum system requirements (PC)

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 Memory: 4 GB RAM Graphics: DirectX® 9 compatible video card with 256 MB, Shader model 2.0. ATI X800, NVidia 6600 or better DirectX®: 9.0c Hard Drive: 10 GB HDD Space Sound: DirectX 9.0c Compatible Hardware: Mouse & Keyboard Other Requirements: Broadband Internet Connection