Zombie Panic! is a multiplayer mod for Half-Life that transformed classic HL deathmatch into one of the first cooperative zombie survival experiences. Players are divided into two sides: Humans fighting to survive, and Zombies hunting them down.

Matches are unpredictable—when humans die, they return as player-controlled zombies, shifting the balance of power as the game progresses. This dynamic ensures no two rounds ever play the same.

Key Features

• Team Survival: Humans must work together to hold off the horde and complete objectives.
• Player Zombies: Dead humans return as zombies, constantly shifting the odds.
• Mission Objectives: Maps often include survival tasks such as defending zones or retrieving items.
• Dynamic Matches: Tense, unpredictable gameplay keeps each round unique.

About Zombie Panic!

Released in the early 2000s, Zombie Panic! was a landmark in the Half-Life modding scene. It introduced cooperative horror elements years before they became a genre standard, inspiring many later mods and games.

By blending action, horror, and teamwork, Zombie Panic! set the stage for a wave of survival-based multiplayer mods and remains a fan-favourite classic in the Half-Life community.

Download

• Zombie Panic! – Windows & Linux version

How to Install

1. Download the Zombie Panic! zip file from the link above.
2. Locate your Half-Life directory (default):
   C:\Program Files (x86)\Steam\steamapps\common\Half-Life
3. Extract the archive so a new zp folder is created:
   C:\Program Files (x86)\Steam\steamapps\common\Half-Life\zp
4. Restart Steam. Zombie Panic! will now appear in your Library.