Zombie Panic Source

Zombie Panic! Source (ZPS) is a cooperative survival horror Half-Life 2 Modification, the sequel to the popular Half-Life Modification "Zombie Panic". As a member of a party of survivors you find yourself without provisions or any military support. Fending off the undead has never been more difficult, but with a large variety of fire arms, explosives, and unique items, the task is not impossible.

ZPS Latest News

The Future of Zombie Panic! Franchise December 9, 2025
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 franchise as a whole, and how this involves the community. Let's dive right into it!What is the plan?The team […]
v3.3 Halloween Update Released October 30, 2025
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 February, Valve released a massive update to the Source SDK which adds Team Fortress 2's client and server game code, making it possible for […]
Celebrating 20 Years of Source with a v2.4 Gamenight November 16, 2024
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 since. The former Zombie Panic Team didn't waste the opportunity and began the work on their sequel, using the Half-Life 2's Source Engine […]
v3.2.9 Update Released October 24, 2024
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:ChangelogAngelscript Added "Utils.RemoveImage". Fixed "Globals.SetAutoBalanceBlocked(bool)" not working in Objective maps.Characters Fixed missing texture on Paul Zombie's viewmodel arms.Client Added checks to prevent changes to DirectX levels. Fixed a […]
Zombie Night Month (ZP1 and ZPS) July 3, 2024
Hello everyone!We're bringing you another series of community gamenight events, but this time on both Zombie Panic 1 and Zombie Panic! Source on July 6th and 13rd. We're partnering with LambdaGeneration platform[community.lambdageneration.com] who will be hosting and streaming the 'Zombie Night Month' where every Saturday of July there will be a gamenight event with the […]
v3.2.8 Update Released April 19, 2024
Hey everyone!Today, we're bringing some interesting changes to the game focused heavily on weapon balance tweaks, additional entities for mappers, Angelscript improvements, map adjustments, bug fixes as usual and other miscellaneous fixes. Two maps in question, Harvest and Frozenheart, got some deserved love after all this time. On Harvest, we're letting Survivors go outside of […]
Celebrating Half-Life's 25th Anniversary with a ZP1 Gaming Event November 19, 2023
On November 19th, 1998, Valve debuted with the release of their first revolutionary shooter Half-Life. Since then, the modding community has released lots of memorable HL1 mods - one of them being the old gem Zombie Panic 1, released on Halloween 2004 by the former Zombie Panic Team.We'd like to celebrate this special date with […]
v3.2.7 Update Released March 30, 2023
We're releasing a very small patch today, focused mostly on code cleanup, few UI fixes, supershorty reload animation changes and other bugfixes as usual. Full details below:ChangelogAngelscript Added "CBaseEntity@ CZP_Player.GetInfectedBy()[api.zombiepanicsource.com]" method which returns the entity that infected this player. Fixed weapons never calling the "OnEntityUsed[api.zombiepanicsource.com]" forward.Entities Fixed "func_clip_vphysics" broken "start disabled" key/value pair. Fixed weapons […]