Released Oct 3, 2008 Free Very Positive Counts toward your Steam games

Zombie Panic! Source

By Zombie Panic! Team

Free to Play Zombies Multiplayer Action Horror Survival FPSModCo-opIndieOnline Co-OpFirst-Person

Track this game Steam page

Followers —

Reviews 7,863 Very Positive

Players yesterday 13 at the busiest moment

Owners 500K–1M estimated

Zombie Panic! Source is a game tagged Free to Play, Zombies and Multiplayer by Zombie Panic! Team, released Oct 3, 2008. It has 7,863 Steam reviews (Very Positive). It has an estimated 500K–1M owners on Steam. The Steam games most like it include Killing Floor - Toy Master, No More Room in Hell and SAS: Zombie Assault 4.

Dive into the zombie apocalypse with Zombie Panic! Source: a cooperative, survival-horror first-person-shooter. A fast-paced standalone modification.

From the Steam page

Is this your game?

Track it free: keep an eye on the games most like yours and hear the moment one of them changes.

Yes, track my game

Launching something like it? Watch it next to yours.

Add a launch badge to your website

Show players where to find it. Paste the code into your website, press kit or devlog.

<a href="https://launchrivals.com/games/17500-zombie-panic-source"><img src="https://launchrivals.com/games/17500/badge.png" alt="Zombie Panic! Source launch date" width="320" height="84"></a>

<a href="https://launchrivals.com/games/17500-zombie-panic-source"><img src="https://launchrivals.com/games/17500/badge.png?theme=light" alt="Zombie Panic! Source launch date" width="320" height="84"></a>

Killing Floor - Toy Master 100% match · Free to Play, Zombies, Multiplayer
No More Room in Hell 83% match · Free to Play, Zombies, Multiplayer
SAS: Zombie Assault 4 81% match · Free to Play, Zombies, Multiplayer
BrainBread 2 81% match · Free to Play, Zombies, Multiplayer
J.A.W.S 80% match · Free to Play, Zombies, Multiplayer
FROSTBITE: Deadly Climate 79% match · Free to Play, Zombies, Action
Fovos VR 79% match · Free to Play, Zombies, Multiplayer
A Walk in the Woods 78% match · Free to Play, Multiplayer, Horror
Hide vs. Seek 78% match · Free to Play, Multiplayer, Action
Lost Squad 78% match · Free to Play, Zombies, Multiplayer

Steam data

Everything Steam lists for Zombie Panic! Source · record updated 1 day ago

Steam store

Overview

App ID17500

Release dateOct 3, 2008Early Access Dec 28, 2007

Last change number40072042

Last record update1 day ago

App type: Game
Developer: Zombie Panic! Team
Publisher: Zombie Panic! Team
Steam profile: Counts toward game count and achievement totals · checked Nov 1, 2025
Franchise: Zombie Panic
Technologies: Source detected
Website: zombiepanicsource.com
Links: Discord Facebook YouTube X

Language	Interface	Full audio
English	Yes	Yes
Russian	Yes
French	Yes
Italian	Yes
German	Yes
Spanish - Spain	Yes
Danish	Yes
Dutch	Yes

All 13 languages

Language	Interface	Full audio	Subtitles
Portuguese - Portugal	Yes
Portuguese - Brazil	Yes
Simplified Chinese	Yes
Spanish - Latin America	Yes
Swedish	Yes

Windows Linux

Steam Deck: Playable

Multi-playerPvPOnline PvPCo-opOnline co-opSteam AchievementsSteam WorkshopSteam CloudIncludes level editorIncludes Source SDKFamily Sharing

Patches

Build	Branch	Updated
20602749	public	Oct 30, 2025
3811266	v3.0.9a	Oct 15, 2020
5567592	legacy2.4	Sep 30, 2020

Depots

ID	Name	Systems	Size	Download	Manifest
17501	—	All	7.24 GB	3.34 GB	6894309537274172400
17502	—	Windows	115.1 MB	38.5 MB	1894950197966786840
17503	—	Linux	84.2 MB	22.7 MB	1316047684949839536
228983	— shared from 228980	Windows	—	—	—
228984	— shared from 228980	Windows	—	—	—
228985	— shared from 228980	Windows	—	—	—
228990	— shared from 228980	Windows	—	—	—

Branch	Build	Updated	Access
public	20602749	Oct 30, 2025	Open
v3.0.9a ZPS v3.0.9a - NOT SUPPORTED!!!	3811266	Oct 15, 2020	Open
legacy2.4 ZPS v2.4 - NOT SUPPORTED!!!	5567592	Sep 30, 2020	Open