Vampirism

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...

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...

"The human eye is an imperfect instrument" - Ambrose Bierce Mode: Coop Description: Be all ears as you won't see death until it's upon you. All Special Infected besides the witch are nearly invisible at a distance only revealing thems...

This mutation is like Tank Rush with a twist: There are only boomers at first, but boomer vomit will attract a mob of tanks. The goal: finish without getting vomited (and if you do get vomited, finish without dying). It may sound simple,...

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...

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...

Zombie Run is a gamemode similar to deathrun, made to work using L4D2's mechanics. The survivors have to run through the course and wait for the rescue helicopter, while being chased by zombies. The Special Infected ARE the traps. They h...

A modified survival mode where guns and items spawn randomly throughout the area at timed intervals. The guns have limited ammo forcing survivors to constantly search for new ones. Currently has custom item spawnpoints on: c1m4_atrium...