Speedrun!! Mutation

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...

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...

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...

Replaces the hubcap-mines used in the Holdout mutation with slightly more realistic looking ones.

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 * ...

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...

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...

It's just like Team Fortress 2! King of the Hill is a fast-paced 8-player competitive gamemode, similar to the one in TF2. Its goal is to contrast the slow gameplay of versus, while still being fun. The four survivors must get to the po...