BIG Terror

This mutation forces survivors to kill or die. Your health decays over time and the only way to keep it up is to kill zombies. The main aim for this mutation was to keep the core gameplay of L4D2 but mix it up by changing one of the m...

A simple template and example for a custom scripted weapon. A staff that shoots exploding fireballs. Note: this is not designed for gameplay, only as an example for mod authors. The script code is licensed with the MIT license. Have fu...

In this co-op mutation, you have to make your way through this horde of 'biters'. When you get bitten, you start bleeding out. Not only that, but zombies love the smell of blood. They get buffed when you're bitten, so clean your wound q...

coop/versus mutation that tweaks infected. Tanks startle all zombies in their radius to attack random survivor. Startling a witch, will cause all zombies in radius of witch to attack startler. Special Infected can control zombies to atta...

Adds the M72 LAW single shot anti-tank rocket launcher to all the official campaigns. The LAW spawns in the same place as melee weapons and takes up the secondary weapon slot. Note: The server or hosting player needs to have the mod fo...

The Green Flu mutates once again - causing the infected (and for some reason, their clothes) to shrink. They may not pack a full size punch but they still hit suprisingly hard and are even harder to hit. Like most pests, they're found in...

Build turrets. Guard the gnome. An arena style game mode where the objective is to build barricades and automated sentry turrets in order to keep the infected from smashing the gnome. Playable as Single player and Co-Op. Earn...

Infected have new abilities. Designed for competitive versus gameplay. Play with friends or start a local public lobby to play online. Both Infected and Survivor: * HP Notifier: Type !tankhp to find out how much health tanks have * ...