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Zombie Panic! Source

Zombie Panic! Source

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

Released Oct 3, 2008 Developer Zombie Panic! Team Platforms Windows · Linux Free to PlayZombiesMultiplayerActionSurvival
View on Steam ↗ Free (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.

84.7%positive7,726 reviews
Recommended · 5 found this helpful

“When I was younger, this game was new. Now that I'm older, I’ve discovered it like a new game again.”

— a player, Steam review · 1 hrs played
Recommended · 4 found this helpful

“Alright, Ill review after playing for a near decade. Its mindless source-game fun, the game modes vary mostly because of the only 2 active servers use mods. Though modded, it balanced and fun. Often times the community will auto-balance the maps as you vote for the next one. If…”

— a player, Steam review · 140 hrs played
Not recommended · 9 found this helpful

“This did have some level of fun - 15 years ago. I would say it isn't worth touching whatsoever today. They also cut a ton of voiced taunts that spoke profane insults - which I think is the point of taunts.”

— a player, Steam review · 184 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. Live count fetched 2026-07-11 11:43 UTC · history via SteamCharts.

27playing at last check
3924-hour peak
748all-time peak
0 250 500 2013 2015 2017 2019 2021 2023 2025 473 avg · Jul 2012

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.

106achievements
0.1%median completion
0.0%rarest: Couch Potatoed
1.1% of players 1.0% of players 1.0% of players 1.0% of players 0.9% of players 0.9% of players 0.8% of players 0.6% of players 0.5% of players 0.5% of players 0.5% 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 0.4% 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 0.3% 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 0.2% 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 0.1% of players 0.1% of players 0.1% of players 0.1% of players 0.1% of players 0.1% of players 0.0% of players 0.0% of players 0.0% of players 1.1% 0% most earned rarest
Almost everyone has
1.1%Fighting for A Greater Cause — Complete any official objective map for the first time.
1.0%Dead in the Water — Win a round on Aquatica as a Zombie.
1.0%Bad Crops — Win a round on Harvest as a Zombie.
Rarest badges of honor
0.0%Couch Potatoed — As a Zombie, prop kill a survivor.
0.0%Propaholic — As a Zombie, destroy 150 breakable props.
0.0%Insatiable Hunger — As a Zombie, kill 50 survivors with headshots.

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.

Freecurrent · sampled 2026-07-26 08:39 UTC
Freelowest since tracking began2026-07-11

Latest official news

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

Mar 10, 2026
Zombie Panic is now available on Steam!

After more than two decades, we're very proud to announce the classic survival-horror modification Zombie Panic! is now available to play on Steam! Go there and blow their brainz out!We wish to thank

Dec 09, 2025
The Future of Zombie Panic! Franchise

Hi everyone! I'm 'Tabajara' (team lead & coordinator) and I'm here on behalf of the Zombie Panic! Team for this announcement to talk about the future plans for the game, what is coming next for the fr

Oct 30, 2025
v3.3 Halloween Update Released

Hello everyone! We're very excited to introduce the long-awaited v3.3 patch and to announce our plans to migrate Zombie Panic! Source to the latest 'TF2 SDK' update-branch!What does this mean?Back in

Nov 16, 2024
Celebrating 20 Years of Source with a v2.4 Gamenight

On Nov 16th, 2004, Valve released a sequel to their most acclaimed franchise Half-Life 2. Debuting their latest engine technology: Source ® - founding the path to innumerous creation of community mods

Oct 24, 2024
v3.2.9 Update Released

We're shipping a small update today containing bugfixes reported by the community from previous patch, few Angelscript additions and other miscs. Full details in the patch notes below: Changelog Angel

Games like Zombie Panic! Source

From our knowledge graph — ranked by shared traits, not a black box. Each card says why it's here.

Cry of Fear Cry of Fear 88.1% · 37,123 reviews shares Mod, Zombies, Online Co Op, Survival Horror No More Room in Hell No More Room in Hell 89.1% · 30,320 reviews shares Mod, Zombies, Online Co Op, Survival Horror Killing Floor 2 Killing Floor 2 86.6% · 64,040 reviews shares Team Based, Zombies, Online Co Op, Survival Horror Transmissions: Element 120 Transmissions: Element 120 94.6% · 5,148 reviews shares Mod, Zombies, Free To Play, FPS Left 4 Dead 2 Left 4 Dead 2 97.5% · 312,019 reviews shares Team Based, Zombies, Online Co Op, Survival Horror Depth Depth 88.4% · 14,113 reviews shares Team Based, Online Co Op, Survival Horror, Gore Propagation VR Propagation VR 93.1% · 3,999 reviews shares Zombies, Online Co Op, Survival Horror, Gore Arizona Sunshine® Arizona Sunshine® 77.2% · 6,353 reviews shares Zombies, Online Co Op, Survival Horror, Gore

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

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

GenresAction, Adventure, Casual, Indie, Free To Play
Player tagsFree to Play · Zombies · Multiplayer · Action · Survival · Horror · Mod · FPS · Indie · Co-op · Online Co-Op · First-Person (SteamSpy community voting)
FeaturesMulti-player · PvP · Online PvP · Co-op · Online Co-op · Mods · Mods (require HL2) · Steam Achievements
LanguagesEnglish * , Russian, French, Italian, German, Spanish - Spain, Danish, Dutch, Portuguese - Portugal, Portuguese - Brazil, Simplified Chinese, Spanish - Latin America, Swedish *
Achievements106
Estimated owners500,000 – 1,000,000 (SteamSpy)
Official sitehttps://zombiepanicsource.com
Minimum system requirements (PC)

Minimum: OS: Windows 10/11 Processor: 2.4 GHz Dual Core or better Memory: 2 GB RAM Graphics: Shader Model 3.0 support (NVIDIA 7600, ATI X1600 or better) DirectX: Version 9.0c Network: Broadband Internet connection Storage: 8 GB available space