Steam Workshop::Custom Mutation

Created by bruhlord

There's no time for friends in this apocalypse. No special infected spawn, but there's a lot more common infected. You spawn with a pack of pain pills and a melee weapon. Good luck. This mutation can be accessed through the main-menu....

Lone Swordsman

Created by Xnes

Legends speak of a swordsman who destroyed everything he touched This mutation is a single player version of four swordsmen with only common infected. There are no special infected, aside from those spawned by scripts, since I can't change that. So its jus...

L4D1 Single Player (Obsolete as of "Last Stand Update")

Created by Audax

August 2020 As of "The Last Stand Update," this is no longer necessary (about damn time). I'll keep this up for download to be used as a reference/comparison, but other than that you no longer need this installed to your game. With the new EMS with the las...

Versus Single With Bots

Created by Chlorororororo

This is my first mod that I publish to workshop This addon will provide you a mutation which you can play versus without strangers and your friends The script of the game is based Versus Single by def075 Features: -Bots can activate obstacles -Bots can do ...

The Floor Is Lava - Co-Op Campaign Mutation

Created by XiaoXiaoMan

Don't stand in one place for too long! The only Infected in this mutation are Spitters. The Spitters have double the normal health, move faster, and have no cooldown on their spit attack. And in case that's not enough, there can be up to eight Spitters at ...

BIG Terror

Created by shotgunefx

Giant infected + Boomers. Infected are slower, but have a lot of health and hit hard. Aim for center mass down, head shots won't count on standing infected atm due to model bbox issues. I'd simply recompile them but don't want to mess up other campaigns. H...

Gun Nuts

Created by Rectus

"You can have it when you pry it off my cold dead hands." The infected have been hoarding guns and ammo, and are not willing to give them up without a fight. A Co-op mutation that removes normal item spawns in favor of having items drop from killed infecte...

Mutation: Homerun

Created by Rye

You only have a baseball bat to deal with a bunch of Chargers... In Homerun, all weapons are replaced with Baseball bats and you are faced against hordes of Chargers (Tanks and Witches are still in the game), Medkits are also there, but no pills or adrenal...

Not immune [Mutation]

Created by Wircea

The apocalypse almost ends but you find yourself that you aren't immune anymore. A single infected streak will take you down. ------------------------------ As the name suggests, in this mutation you are not immune anymore. A single hit from a common will ...

Gibsaw Mutation

Created by AlwaysToast

Gibsaw Mutation: Infinitely amusing slaughter. Infinite Chainsaws. Infinite M60 Machine Guns. For people who don't like having to pick between Gibfest and Chainsaw Massacre. ...

Hunter Mutation

Created by Khorps

*Most misleading title ever* Anyways this mutation gives you a CSS knife and Scout. There's also multiplayer mode....

Campfire Mutation

Created by AlwaysToast

Campfire Mutation: You'll be warm for the rest of your life. Your only weapons: Wood (baseball bat) and Fire (Infinite Molotovs). What's more dangerous, the zombie horde, or survivors with infinite molotovs? AlwaysToast is not responsible for improper use ...

Boomsaw Mutation

Created by AlwaysToast

Boomsaw Mutation: Safety is Job #1 Infinite Chainsaws. Grenade Launchers with a few extra grenades.* *If you can't pick up a new Grenade Launcher, it is because the "new one" only has 1 shot in it. Only affects some grenade launchers, others in same area m...

Doctor Mutation

Created by Khorps

Just a magnum, defibs, first aid, bile bombs and adrenaline. Zombies do 2-20 damage so be untouchable. Will you go back to revive a dead team mate? Also a singleplayer. Thanks Rectus for teaching me how to create a SlowPoll!...

Real Life Mutation

Created by ÑANGA ÑONGO

The Real Life Mutations were created for users who want to play Realism mode without any hub, crosshairs or glowing borders. The NPC players are disabled, that means if you are playing with two friends, then three survivors will be in-game or if you're alo...

Foggy Vision Mutation

Created by AlwaysToast

Foggy Vision Mutation Fog will limit your vision to just a few feet. Have fun with that. Blindness from boomers last 5 seconds longer than normal. Lower ammo capacities for guns. To discourage blindly firing into the fog. Note: Does not look good on some c...

Hunter City [Mutation]

Created by ☂ℝΔ¿ℕ₂

▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Launch: Main menu ➜ Mutation ➜ Change Mutation ➜ Hunter City ➜ edit settings ➜ server local ➜ invite friends ➜ GO ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Spec: T1 Survivors at the beginning of the game receive 150 HP. Up t...

Last of us Mutation

Created by ExPR

"I have not... Come this far... To die now." HUGE UPDATE FOR ALL OF YOU GUYS Introducing Last of Us Mutation This is a two-player mutation, similar to the Last of us Series where two remaining survivors must survive the apocalypse. With the onslaught of ho...

Speedrun!! Mutation [Beta]

Created by Rectus

A mutation where you battle the other survivors getting to the saferoom first. With infinte ammo and regenerating health, the infected are merely there to slow you down. Items are replaced with adrenaline and molotovs. Features server persistant scoring. C...

Mutation: Mental Health

Created by Ben Lubar

Maintain your sanity through the deliberate assassination of others. You're bleeding out and the only way to recover health is by finishing off enemies with headshots. Accuracy and teamwork will be necessary to survive....

Locked Doors Mutation

Created by poM

Some doors are locked. You need keys. In this mutation, you are a lone injured survivor. You'll start with a limited ammo magnum pistol and it's the only gun in this mutation. Magnum pistol is your primary so you can (should) have a melee weapon as your se...

Mutation: Attack of the Boomers

Created by some sort of giant enemy crab

Only boomers, getting vomited doubles their spawn rate. Defaults to expert with lowered FF Highly reccomend sniper rifles for killing them (250hp boomers) Credit to Neil - 119 for the base code (boomer peril)...

Mutation: Army of Tanks

Created by some sort of giant enemy crab

Get your epic tank music mods ready, because you are going to be assaulted by an absurd amount of tanks....

Mutation : Nightmare Horde Mode

Created by AymericTheNightmare

Mutation by AymericTheNightmare, based on Super Horde Mode and Romero Mod. I hope you like it. Comments are welcome to improve my mod. Bonus, My M16 Skin as you can see on the second picture : https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=259715749...

Mutation : Magnum Rage

Created by ACStorage

Mutation by AymericTheNightmare. In "Magnum Rage", your only friend is a magnum... You also have pain pills at the beginning. There are a small number of zombies and no specials....

Heal When Dead Mutation

Created by AlwaysToast

Heal When Dead Mutation Health Kits replaced with Defibrillators. Pain Pills replaced with Adrenalin Shots. Rescue closets disabled. ...

Ammo Apocalypse Mutation

Created by AlwaysToast

Ammo Apocalypse Mutation: No ammo piles.* Vast reduction of ammo carry capacity for all primary weapons. Pick up new guns if you want more ammo. *There are still unlimited stacks of weapons (where they are normally in each map)....

Chainsaw Catharsis Mutation

Created by AlwaysToast

Chainsaw Catharsis Mutation Because sometimes you just want to relax and cut down zombies. Chainsaws with infinite fuel. The only specials are Boomers. No Tanks and Witches, except Finale Tanks, and where they are programmed into the map. Plenty of common ...

Tiny TERROR

Created by shotgunefx

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 large numbers. Mod...

Walking Corpses

Created by F(r)iend

This is no longer a run n' gun, race-to-the-saferoom game. This is SURVIVAL HORROR. Basically like AMC's The Walking Dead tv show. Campaign mode: There are no survivor bots / AI. Just you and whoever joins your game. Walkers will take you down in ONE hit s...

CPUs Mutations

Created by Adult Neptune

Español: Estas son algunas mutaciones que he creado para disfrutar de diferentes experiencias de juego segun se quiera, espero que las disfruten. Estas mutaciones se pueden jugar tanto en primera persona (como es normal) o en tercera persona si se dispone ...

Gnome Guardians

Created by Rectus

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. Includes both a Single player and Co-Op mode. Earn money by defending th...

Pitch Black - Mutation

Created by TheoryofLime

Overwhelmed by darkness. Very dark, lots of specials, no meds, 2 downs, and no respawns. Best of luck on expert. Note (2/24/2023) : This mutation is bad and lazy and I forgot I made this garbage mutation. This will remain unlisted so in case you want to ke...

Foggy Vision Realism

Created by AlwaysToast

Foggy Vision Realism Mutation Fog will limit your vision to just a few feet. Realism mode enabled. So have fun with that. Blindness from boomers last 5 seconds longer than normal. Lower ammo capacities for guns. To discourage blindly firing into the fog. N...

Where there is smoke...

Created by AlwaysToast

Where there is smoke... Mutation. Campfire + Foggy Vision Your only weapons: Wood (baseball bat) and Fire (Infinite Molotovs). Fog will limit your vision to just a few feet. Have fun with that. Blindness from boomers last 5 seconds longer than normal. What...

Survivor Buff [Mutation]

Created by AxeKiller6277

You have just survived the Survivor Debuff. Now get ready for a reward, in this mutation you and your team will have access to high end weapons at the start....

The Real Zombie Apocalypse [Mutation]

Created by AxeKiller6277

In this mutation, there aren't any special infected*, just common ones. Zombies are slow and they appear in large numbers but they are very dangerous. A few swipes form them and you'll go down. To make matters worse, they only go down with a headshot or de...

Survivor Debuff [Mutation]

Created by AxeKiller6277

Still want a challenge? Try this mutation; all weapons have been replaced with either SMGs or Pump Action Shotguns. No more fully automatic rifles and shotguns, no more M60s, no more Grenade Launchers. Magnums still spawn though....

Fast Zombies - Big Horde Edition (Mutation)

Created by Olde

Work in progress. This is a coop mutation designed to be played on Advanced difficulty that greatly increases the speed of common infected, as well as boomers and chargers (slightly), while also adding increased horde sizes and shorter times between them. ...

Leakage Boi - Mutation

Created by Anzu the Chucklefuk

Version: 1.3 In a world where you're all alone, with nothing but a baseball bat and pills. This world is full of boomers, spitters, and loads of common infected.. good luck. (You can play coop with this mutation, up to 4 players) Spawnrate for special infe...

Breakfast Bash

Created by Jongsch

Fight your way to safety, with only your wits and a cast iron skillet. This mutation will work on any level that features frying pans: Swamp Fever Hard Rain The Parish Death Toll Blood Harvest ...

tourist's Mutations

Created by tourist

Hack'n'slash Mutation All weapons have been removed, each player will only be given some melee weapons While you are under the effect of adrenaline, you gain health points for every common infected you kill. If your health is full, it will start converting...

Louis's Pills Mutation

Created by Khorps

Zombies give you free pills... And hurt you. But let's just think about the pills. Infinite pills aslong as you use your weapon or let a zombie give you pills. Well first sfm pic for my mutations. Not that good but my first one anyway. You can use any char...

Healing Hands

Created by Mike Oxlong

Get more from healthkits, adrenaline, and pills! A full list of effects: -Health kits always heal the player to 100% health -Pills fill health to 100% and decay much more slowly -Healing from health pack, or healing a team mate takes place almost instantan...

Mutation: No Re-Entry

Created by Rye

Nobody Survives Forever In this mutation, when you die, you stay dead FOR THE REST OF THE CAMPAIGN!!!!!!!!!!!!!!!!!!!!!!11111!!!!!!!!one!!!!!!!! also Headshots only console code ---> map (mapname) noreentry...

Shopping (Mutation)

Created by poM

A SOLO mutation... ..where you kill zombies to earn money and spend your money on buying items. You start with a magnum. Its ammo is limited so acquire a melee as fast as you can. There's no random horde and the number of zombies is limited. Zombies hit ha...

Leaker Madness [Mutation]

Created by Wircea

This mutation disables all coomons and special infected and spawns just leakers. (8 at a time) For those of you who don't know what a "leaker" is, the leaker is a cut/hidden/removed special infected that is still present in the game code, but it's not used...

Overrun Mutation Pack

Created by Fine

"Overrun", another singleplayer mutation mod that aims to bring the survival experience to Left 4 Dead. "All Alone" veterans will be particularly pleased with the challenge this gamemode poses. Mastered the art of sneaking around zombies with melee weapons...

Pistol Only

Created by 94-0236313-0

A mutation that allows only one default pistol....

Infection

Created by bruhlord

The infected carry disease, filled with a variety of symptoms. The mysterious disease of the L4D franchise has mutated, leading to symptoms for those who are infected. When a survivor drops to 60% of their health, they are vulnerable. There are currently m...

Class-Based Mutation

Created by poM

This is a coop mutation. You will be assigned to a class according to the character you choose. Each class has their unique ability and loadout. There are 4 classes in this mutation, Assault, Medic, Engineer and Sniper. See images for their loadouts. Medic...

Mutation: Tetramagnum

Created by Ben Lubar

Four survivors. Four magnum pistols. That's it. No other guns. No health packs. No special infected, apart from a few boomers. Well, QUITE a few boomers. Stock up on painkillers. You're going to need them....

True Dead

Created by Buster_B

No bots, No specials, No random huge hordes. They are slower. But gun fires attract them. And melees have durability. (THIS IS A MUTATION, IT DOESN'T CHANGE YOUR MAIN GAME) - Gun shots will attract surrounding zombies. - Melee weapon durability and break s...

CLPL Configuration Mutation

Created by 0721

This mutation delete all senior weapon to make you feel you are in confogl. For fun,We place some sniper rifles(scout,awp)in this mutation. It means that you should unlock this sniper rifles. You can play this mutation with the"Confogl-liked Specials" http...

Classic

Created by bruhlord

It's like an old zombie movie. Only common infected spawn, and they hit much harder. The only weapons are pistols, pump shotguns, molotovs, pipe bombs, melee weapons and chainsaws, as well as the good ol' M16. You start with a baseball bat and some pain pi...

Last Survivors On Earth

Created by The Law

You will become legend to the Special Infected as the last survivors left. Inspired by many others alike, this mutation is basically Valve's official one "Last Man On Earth" but with 2 survivors instead (You + either a bot or a player). Only special infect...

Romero Mod

Created by xaroth8088

The baying of the hordes in the distance always chills my heart. Am I out of ammo? If I run, will I make it next door or just get swarmed? How can we move without getting separated? Oh, God... the tortured moans of the undead again. Lord, how I miss home. ...

Gnome Apocalypse

Created by JurasPatryk

Pick me up pls. Mutation can be found in Change Mutation menu....

Left 4 Dead 2