Rayman1103's Mutation Mod (Left 4 Dead 2)

Adds a lot of Custom Mutations created by me and others.

The main-menu has been edited so all Mutations can be created via lobbies, and can be played online at anytime. To play Custom Mutations online, they'll have to be played via a Local Server.

If you have my Singleplayer Enabler mod (linked below), you can play 4-player Mutations in Singleplayer!

View Changelog (v52.0 Complete)

Tagged Mutations gameplay

Updated: 02/16/21 • Views: 328,459 • mutation mod.vpk (9MB)

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Kurumizawa_Hikari January 2021

Do you have the old version of this?. I'm playing this at 2.1.5.5 version and most of the mutation didn't work (because the addon got updated). like for example, No L4D1 Survivor spawning, No witch spawning in Witch Hunt, and something that have to do with spawning entities.

Kurumizawa_Hikari January 2021

Here's an error report on me starting United_Coop mutation: Activating United We Stand Co-Op Made by Rayman1103 AN ERROR HAS OCCURED [the index 'GetMapName' does not exist] CALLSTACK *FUNCTION [main()] d:/pc_games/left 4 dead 2/left4dead2/scripts/vscripts/Mutation_Mod/VSLib/EasyLogic.nut line [623] *FUNCTION [DoIncludeScript()] NATIVE line [-1] *FUNCTION [IncludeScript()] unnamed line [75] *FUNCTION [main()] d:/pc_games/left 4 dead 2/left4dead2/scripts/vscripts/Mutation_Mod/VSLib.nut line [40] *FUNCTION [DoIncludeScript()] NATIVE line [-1] *FUNCTION [IncludeScript()] unnamed line [75] *FUNCTION [main()] d:/pc_games/left 4 dead 2/left4dead2/scripts/vscripts/united_base.nut line [6] *FUNCTION [DoIncludeScript()] NATIVE line [-1] *FUNCTION [IncludeScript()] unnamed line [75] *FUNCTION [main()] d:/pc_games/left 4 dead 2/left4dead2/scripts/vscripts/unitedcoop.nut line [5] *FUNCTION [DoIncludeScript()] NATIVE line [-1] *FUNCTION [IncludeScript()] unnamed line [75] *FUNCTION [ScriptMode_Init()] d:/pc_games/left 4 dead 2/left4dead2/scripts/vscripts/scriptedmode.nut line [105] LOCALS [vargv] ARRAY [this] TABLE [scope] TABLE [name] "Mutation_Mod/VSLib/EasyLogic.nut" [this] TABLE [__VSLIB_NOTIFY_VERSION__] true [vargv] ARRAY [this] TABLE [scope] TABLE [name] "Mutation_Mod/VSLib" [this] TABLE [vargv] ARRAY [this] TABLE [scope] TABLE [name] "united_base" [this] TABLE AN ERROR HAS OCCURED [Failed to include script "Mutation_Mod/VSLib/EasyLogic.nut"] CALLSTACK *FUNCTION [IncludeScript()] unnamed line [75] *FUNCTION [main()] d:/pc_games/left 4 dead 2/left4dead2/scripts/vscripts/Mutation_Mod/VSLib.nut line [40] *FUNCTION [DoIncludeScript()] NATIVE line [-1] *FUNCTION [IncludeScript()] unnamed line [75] *FUNCTION [main()] d:/pc_games/left 4 dead 2/left4dead2/scripts/vscripts/united_base.nut line [6] *FUNCTION [DoIncludeScript()] NATIVE line [-1] *FUNCTION [IncludeScript()] unnamed line [75] *FUNCTION [main()] d:/pc_games/left 4 dead 2/left4dead2/scripts/vscripts/unitedcoop.nut line [5] *FUNCTION [DoIncludeScript()] NATIVE line [-1] *FUNCTION [IncludeScript()] unnamed line [75] *FUNCTION [ScriptMode_Init()] d:/pc_games/left 4 dead 2/left4dead2/scripts/vscripts/scriptedmode.nut line [105] LOCALS [scope] TABLE [name] "Mutation_Mod/VSLib/EasyLogic.nut" [this] TABLE [__VSLIB_NOTIFY_VERSION__] true [vargv] ARRAY [this] TABLE [scope] TABLE [name] "Mutation_Mod/VSLib" [this] TABLE [vargv] ARRAY [this] TABLE [scope] TABLE [name] "united_base" [this] TABLE [vargv] ARRAY [this] TABLE SCRIPT PERF WARNING --- "main" ran long at 16.365241ms AN ERROR HAS OCCURED [Failed to include script "Mutation_Mod/VSLib"] CALLSTACK *FUNCTION [IncludeScript()] unnamed line [75] *FUNCTION [main()] d:/pc_games/left 4 dead 2/left4dead2/scripts/vscripts/united_base.nut line [6] *FUNCTION [DoIncludeScript()] NATIVE line [-1] *FUNCTION [IncludeScript()] unnamed line [75] *FUNCTION [main()] d:/pc_games/left 4 dead 2/left4dead2/scripts/vscripts/unitedcoop.nut line [5] *FUNCTION [DoIncludeScript()] NATIVE line [-1] *FUNCTION [IncludeScript()] unnamed line [75] *FUNCTION [ScriptMode_Init()] d:/pc_games/left 4 dead 2/left4dead2/scripts/vscripts/scriptedmode.nut line [105] LOCALS [scope] TABLE [name] "Mutation_Mod/VSLib" [this] TABLE [vargv] ARRAY [this] TABLE [scope] TABLE [name] "united_base" [this] TABLE [vargv] ARRAY [this] TABLE [scope] TABLE [name] "unitedcoop" [this] TABLE [bScriptedModeValid] true [mapname] "l4d2_tank_arena" [modename] "unitedcoop" [this] TABLE SCRIPT PERF WARNING --- "main" ran long at 17.160362ms AN ERROR HAS OCCURED [Failed to include script "united_base"] CALLSTACK *FUNCTION [IncludeScript()] unnamed line [75] *FUNCTION [main()] d:/pc_games/left 4 dead 2/left4dead2/scripts/vscripts/unitedcoop.nut line [5] *FUNCTION [DoIncludeScript()] NATIVE line [-1] *FUNCTION [IncludeScript()] unnamed line [75] *FUNCTION [ScriptMode_Init()] d:/pc_games/left 4 dead 2/left4dead2/scripts/vscripts/scriptedmode.nut line [105] LOCALS [scope] TABLE [name] "united_base" [this] TABLE [vargv] ARRAY [this] TABLE [scope] TABLE [name] "unitedcoop" [this] TABLE [bScriptedModeValid] true [mapname] "l4d2_tank_arena" [modename] "unitedcoop" [this] TABLE SCRIPT PERF WARNING --- "main" ran long at 19.571964ms AN ERROR HAS OCCURED [Failed to include script "unitedcoop"] CALLSTACK *FUNCTION [IncludeScript()] unnamed line [75] *FUNCTION [ScriptMode_Init()] d:/pc_games/left 4 dead 2/left4dead2/scripts/vscripts/scriptedmode.nut line [105] LOCALS [scope] TABLE [name] "unitedcoop" [this] TABLE [bScriptedModeValid] false [mapname] "l4d2_tank_arena" [modename] "unitedcoop" [this] TABLE

Trunten December 2020

Can you double check the version you modified for me? Had a couple comments after the update. Maybe possibly still needs work.

YamilaNoelia December 2020

No funciona

Guest November 2020

Like others are saying, there seems to be an issue on anything but a local server. My group also enjoys playing as all infected in Training mode Co-op versus (no tank version) and are experiencing issued with this mod on a group server. We have experienced the following while on group server: 1) when loading as either all infected OR all survivor pressing the "M" key to swap sides provides the following error message: "Unable to change teams; You must wait until all players have loaded" 2) After a minute or so of game play (ignoring the issue above) the server auto drops us to lobby 3) upon completion of a map (with some playing as infected and others playing as survivors) the group experiences a server time out 3a) this is the problem where you get a L4D2 popup window in game with the spinning wheel of death and the message "trying to reconnect to server" and the 20 second count down in the upper right corner of the screen. The mutation mod seems to work just fine in local server.

talis84 November 2020

My group and I were troubleshooting two issues, one of which was for another mod. We were having problems with both this mod and the other mod working on our group server. We eventually put 2 and 2 together and realized the server limit that Steam implemented in 2018 which prevented mods from loading on servers was the route cause of both of our issues. Follow the instructions here - (Local Servers) Locate and open "addonconfig.cfg" in "Left 4 Dead 2/left4dead2/cfg". - (Community Dedicated Servers) Locate and open "addonconfig.cfg" in "<your server directory>/left4dead2/cfg" - Change all "RestrictAddons" values to 0 - Save changes and enjoy hosting your local versus server. Basically you have to reenable mods to work by finding your addonconfig file and disable the "RestrictAddons" command setting. Doing so will reenable mods like this one on your group server. Understand that this will NOT reenable mod on the official servers.

mipansususuadd November 2020

damn it doesn´t work this is stupid

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adds more variety to an already good game!

By Trunten November 2015

This mod is essentially adding on to what Valve already started with "mutations"... adding more game modes and such. A great way to make the game more challenging without silly over modified servers or map authors abusing the director in maps.

By reidakzaktan February 2015

Pros

fun to play when you have nothing to do i like game menu graphics fun to play also with admin system works with almost custom addons campaigns

Cons

the not pausable on single player mutation ex:(one against many)

generally this addons deserve featured by valve and community. i recommended for everyone for killing zombies

By Emersonrick January 2015

Pros

- Super Interactive Menu - Dozens of varieties and ways to play - Incredibly challenging - Super useful to use as a training - He entered my favorites list

Cons

- Absolutely nothing against this piece of art.

This is perhaps the best mod mutation that played in L4D2. The huge plethora of options are incredible. Each with its characteristic, challenge and goal. I was very happy to have found this mod, he left my very best game. Congratulations and thank you for provide hours of fun. p.s.: downloaded from their facebook page

By Dumbocow May 2014

Pros

-Countless of mutations -Fun with friends -Hardcore mutation -timeless of fun

Cons

-No information for all mutation

A very fun Mutation good for everyone(not for kids) but you should add some information but Thanks for making this great mod

By vrencianz March 2014

Pros

The last duo on Earth mutations A lot of L4D2 achievements can be unlocked using the training mutations and/or the realism ones Jimmy Gibbs! It is a guideline for new coming L4D2 add-on creators Tons of other pros

Cons

Few mutations are so hard that I could not advance more than few meters from the starting safe area.

Keep your installation up to date, because - I am sure - you have this mutations mega-pack installed.

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