Dive into the zombie apocalypse with Zombie Panic! Source: a cooperative, survival-horror first-person-shooter. A fast-paced standalone modification.
Recent Reviews:
Very Positive (67) - 85% of the 67 user reviews in the last 30 days are positive.
All Reviews:
Very Positive (6,070) - 85% of the 6,070 user reviews for this game are positive.
Release Date:
Dec 28, 2007

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Recent updates View all (271)

December 10

v3.1 Beta Status Update

Hello everyone,

We'd like to start off by thanking everyone who has participated in the public beta testing so far and left their feedback to us on the forums. Input from the community is a valuable source of information and allows us to polish the game even better. With the initial bugs reported and suggestions from the week after launch, we've shipped our first major patch of adjustments and fixes into the 'unstable' beta branch. As a result, this will make public playtesting more balanced, fast-paced and fun to play.

The major changes are the following:
  • Decreased zombies' outline radius by 50%. It was far too strong to be able to see teammates across the entire map.
  • Increased cooldown for voice command and taunts to counter spamming.
  • Increased player movement speed for both teams by 10%.
  • Reworked the Angelscript algorithm on all official maps. This will fix the lack of ammunition and weaponry when playing with a high number of players. We also set a new rule to not spawn a specific type of ammo if the weapon isn't present in the map.
  • Reworked the spawn selection algorithm.
  • Reworked the starting zombie selection algorithm.
  • Reworked the Zombie HP regen algorithm to be more like early ZPS versions.
  • Zombies lives are now capped to 32 max.

You can check the full list of changes from today's patch in our changelog thread

We'll continue to adjust and improve the v3.1 beta based on feedback from the community. We're currently working on other fixes of some remaining bugs and issues presented in the build, aiming for the second patch of fixes next week or so. We'll also keep on the lookout for more reports and suggestions from playtesting, so be sure to keep them coming to our Public Beta 3.1 sub-forums!

Help us test it by switching your game to the 'unstable' beta branch to play the latest changes of our upcoming 3.1 update. Read more how to here.

Improved Language Support
With recent changes and enhancements, it is now much easier to support different languages in-game. We have reached out to our community contributors who volunteer their time to translate Zombie Panic! Source into their main native language to update our localization files with the new 3.1 changes.

Language support can be pretty important for the enjoyment of games. During the beta, you will be able to read objective lists, phone messages, storylines, tips, in-game beacons and game texts in your language of choice! We've reworked our entire localization system, making it easier for volunteers to translate the game in their own native language by using a translator application, which is now available in the Zombie Panic! Source Mod Tools.

We currently support the following:
  • French
  • Simplified Chinese
  • Spanish (Spain)
  • Swedish
  • Russian

You can set your game to use one of these languages via Properties > Language tab.

In the meantime, we and our contributors will continue to update our localized files during the public playtest period, addressing the remaining labels and sections to translate. A huge special thanks to: Shepard (French version); Klowby and Kud (Chinese version); Darkumbrella, GreenKnight and Residays (Spanish version); Jonnyboy (Swedish version); and dR.Vodker (Russian version).

Support Us!
Phase 1 of the ModDB 2018 Mod of the Year Awards has ended, and Phase 2 has begun. This means the Top 100 have been selected, and there will be another 10 days of voting to determine the victor of 2018!

Please vote for us again, but don't forget about your other favorite mods! Voting will enter you into the draw to win games from their #modlove collection.
12 comments Read more

November 30

v3.1 Beta is now available for public testing!

Today, we're very proud to release the 3.1 update for public playtesting! The latest changes are all available in our unstable beta branch. You can find out how to opt in to the beta on this thread.

We've created a new sub-forum in our Steam Discussions for reporting bugs and providing feedback during the public playtesting period. All of 3.1's issues, crashes, suggestions, and ideas should be directed to that specific sub-forum only. Please keep everything 3.1-related in that forum for better documentation and organization.

IMPORTANT: to have the new sounds work properly, you will need to remove your sound cache in your vpks. Delete the "zps_sounds.vpk.sound.cache" file located inside your vpks folder inside your Zombie Panic! Source directory.

The following major changes are:
  • Linux Client support working for Ubuntu and SteamOS versions.
  • New recoil system, similar to Day of Defeat: Source, for each firearm.
  • New survivor's first-person and third-person animations for pistols, shotguns, rifles, explosives and phone device.
  • New sound effects, three new melee weapons, and a brand-new explosive grenade model.
  • New portable inoculator for self-heal, healing your teammates or delaying the infection (depending on the color of the inoculator)
  • New sprays from our community contest winners and development team.
  • Source code rewritten from the ground up without using any of HL2DM's code.
  • Improvements to player hitboxes and barricade hammer enhancements.
  • Biotec redesign with visual improvements and Club Zombo gameplay improvements.
  • Steam Workshop fully functional again with additional "Add-ons" menu.
  • A new 'tutorial' menu section dedicated for newcomers.
  • Glock 18c is now a fully automatic weapon, but is much more inaccurate than other pistols.
  • Updated ZPS Angelscript API documentation.
  • 30 new Steam Achievements.
  • Numerous bug fixes!

View this thread for the full changelog.

We highly recommend backing up your personal client files before opting in to the beta in case something untoward happens. We appreciate your help in advance!

ModDB's 2018 MOTY Awards
The phase 1 of the ModDB 2018 Mod of the Year Awards has begun, so go vote and show your support for your favorite mods! Voting also enters you into the draw to win games from their #modlove collection.

We ask that please you give us a vote, but be sure to give your other favorite mods a vote too!

Happy testing,
- Zombie Panic! Development Team
19 comments Read more


“The thrill of fending off a zombie hoard who are being controlled by real people is great!”

“Zombie Panic! Source is a truly one-of-a-kind experience for survival FPS lovers.”

“If you love a fast paced, first-person zombie shooter, this is your game. The positives of this game far outweighs any improvement areas that could be identified.”
Zombie Gaming

About This Game

Dive into the zombie apocalypse with Zombie Panic! Source: a cooperative, survival-horror first-person-shooter. A fast-paced standalone modification.
Choose your team as the undead or a survivor. Enjoy their unique abilities, weapons, and challenges in this high-paced, action-packed thriller.

The Teams

As a survivor, unlock large arsenals of firearms, explosives and improvised melee weapons. Can you stop the waves of undead? Will you engage the horde head-on, or barricade and fortify while your friends play sniper? If all else fails, Panic! Then run as if your lives depend on it… for they surely do.

As a zombie, you’re free to hunt the living like the rabid beast you are. Feast upon their flesh and unlock your inner berserker. Heightened zombie night-vision gives you the upper hand in dark environments. Infect survivors as the carrier zombie (patient zero), to weaken their defenses, then sadistically watch them turn on each other. Use it all to your advantage to strategics, ambush, conquer and destroy your oblivious living counterparts.


Zombie Panic! Source hosts a variety of game modes for excellent replayability. Explore the zombie apocalypse with:

  • Survival Mode: Put your ability to scavenge and survive to the test. Easily the top player choice.
  • Objective Mode: You’re on a mission. Whether it’s to escape or defeat the horde, you’d better use your brainz to find those keys, get the power back on, hack that computer, and get to the chopper! Otherwise… I think you know what happens.
  • Hardcore Mode: For experienced zombie connoisseurs, you and your teammates get to enjoy pitting yourselves against extra tough foes, and even rougher odds.

Mature Content Description

The developers describe the content like this:

This Game may contain content not appropriate for all ages, or may not be appropriate for viewing at work: Frequent Violence or Gore, General Mature Content

System Requirements

    • OS: Windows® 7 (32/64-bits)/Vista
    • Processor: 1.7 GHz Processor or better
    • Memory: 2 GB RAM
    • Graphics: Video Card Shader model 3.0
    • DirectX: Version 9.0c
    • Network: Broadband Internet connection
    • Storage: 8 GB available space
    • Sound Card: DirectX 9.0c compatible sound card
    • OS: Windows® 7 (32/64-bits) or above
    • Processor: 2.4 GHz Dual Core Processor or better
    • Memory: 4 GB RAM
    • Graphics: nVidia 7600, ATI X1600 or better
    • DirectX: Version 9.0c
    • Network: Broadband Internet connection
    • Storage: 8 GB available space
    • Sound Card: DirectX 9.0c compatible sound card

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