Left 4 Dead 2

Left 4 Dead 2

Mutation: Un-Immune (Now With Versus!)
78 Comments
Bobinsox 30 Sep, 2024 @ 7:56pm 
Xanaguy uploaded an updated version in 2019 since this one died a decade ago.
miotojptx 19 Oct, 2022 @ 5:41pm 
This mod doesn't work anymore. Probably the TLS update.
John27 25 Aug, 2021 @ 1:59pm 
there is a similar newer "vaccine" mutator, idk if taken or not
Zelda Merda 21 Oct, 2020 @ 7:32pm 
Players don't get "infected" after dying and getting rescued in a closet. Infection only works in the first life of the player
Mafilovy 4 Feb, 2020 @ 9:27am 
Lovely
Xanaguy 25 Jun, 2019 @ 12:15am 
It would appear as though the author is no longer supporting this mutation, regardless, I have finally gotten around to uploading a fixed version of this mutation. Enjoy.
Lemon Fizz 30 Jan, 2019 @ 4:07pm 
pro tip this mutation is fun BUT everything infects you yes EVERYTHING fire,spitter goo karma chargers charging & friendly fire you name it even adrenaline shots if you use it un-infected. PS if a bot dies they'll respawn in saferoom and instantly die and turn into a special infected and instant "survivors were overwhelmed" PPS jockeys are safe except their melee attack
Victorious the red Dragon 6 Jan, 2019 @ 5:05am 
do not play this with bots. cause that might cause you to lose right on
Xanaguy 5 Sep, 2018 @ 1:32pm 
Unimmune Versus does NOT have a .nut file, making that "mutation" 100% Normal gameplay. I am currently coming up with a fix and solo versions. With your permission, I would like to upload this as a separate addon.
SarahTheWolf 10 Jul, 2018 @ 7:34am 
This + Dead Rising Mods = FUN!
You earned a BIG THUMBS UP!
Dyl-Pickle 14 Jan, 2018 @ 4:19pm 
How do you play this? I cant find it in mutation.
staryoshi06 21 Sep, 2017 @ 3:00am 
Is it possible to find a way to make this work on L4D1 maps? I assume it's something to do with having different survivors.
Pegasis-Vera (She/They) 22 Jul, 2017 @ 8:48am 
Would you mind if I use the source code to this for a mod I'm making and give you credit for the stuff I don't edit? I've been trying to make something like this but no amount of tutorials has been able to teach me how to do it...
NOPE228 4 Feb, 2017 @ 11:50pm 
Dear developers, please can you make this mutation for survival mode, it would be great!
Ninjacat43 2 Oct, 2016 @ 12:07pm 
This is awesome, but my teammates don't turn when killed. Is there a known reason for this?
Athena 31 Jul, 2016 @ 8:14pm 
Is there a Un-immune without verses?
Zz_THEGREATZ_Zz1 25 Jul, 2016 @ 11:02am 
oh no ive been shot its okay tho it only takes a little bit of dama-wait why am i infected?
Buddershroom 25 Jun, 2016 @ 7:23pm 
it seems like anything you can get damaged by "infects" you like gunfire, explosions, fire, falling
i find it weird
RESCUE 7 28 May, 2016 @ 6:10pm 
Valve should of added this...
Chem Dog 20 Feb, 2016 @ 10:06am 
I've been looking for a mod like this for ssooo long. Thanks
Amber 24 Dec, 2015 @ 5:38pm 
I love this mod :3 when I heard that you turned I was hoping you actually got to control your infected but its that moment that No adrenaline shots left someones bit (from previous level) and your all just sitting in the saferoom then ur buddy a minute or 2 later OUT OF THE BLUE just turns into a tank its like AH! or as Bill would say Holy Mother of God,I just love waiting for my ally to turn as im pointing a shotgun to their head ready to blow it clean off
Domenikus 17 Dec, 2015 @ 7:29pm 
Why does fire infect you?
Zedalch 1 Dec, 2015 @ 8:51pm 
This is awesome due the No More Room in Hell and Killing Floor 2 and 1 atmosphere.
CodeKiller 17 Aug, 2015 @ 10:04pm 
@HYDRA956

to me a nerd is just being smart in general
CodeKiller 17 Aug, 2015 @ 9:39am 
idk
Rye  [author] 17 Aug, 2015 @ 9:20am 
@Ancestor Doge

But nerds are good, why are you ashamed of it?
CodeKiller 17 Aug, 2015 @ 12:45am 
well, technically the survivors aren't immune they are infected but resistent to the zombification and special infected mutations.

I'm such a god damn nerd
Un Coche Corto 29 Nov, 2014 @ 8:44am 
with it only working on l4d2 maps doesnt that mean the old survivors are the only people who are the only immune humans with the escape guys also being immune?.......somehow
Bluebirdo 31 Oct, 2014 @ 7:25pm 
Interesting mutation, it's a shame you can't control the special you become, but still cool.
KJ 25 Oct, 2014 @ 12:27pm 
holy shit, now this game is 5x more realistic coz before they only just weakly scratched ya
we get a little silly 2 Oct, 2014 @ 10:17am 
T5his is so much like a real Zombapoclypse guys DONT GET BIT VVV
Rye  [author] 4 Aug, 2014 @ 8:49am 
@[CTT] Ater (GlaZe)
The infection system iss randomized, you can turn into a Tank, Witch, Spitter, Hunter, Ect
its always randomized
Sleep Token <3 4 Aug, 2014 @ 5:41am 
if a player dies is it possible that he turns to a witch ?
Survivor 31 Jul, 2014 @ 3:38pm 
i very much shrekt him
Rye  [author] 31 Jul, 2014 @ 3:22pm 
@Zeplija
Okay, i payed for it, heres your double-quarter pounder with a 20 piece mc-nugget and bbq sauce, and your coke too *hands it to ya*
Rye  [author] 31 Jul, 2014 @ 3:20pm 
@slenderbender

I lost ;~:
I got shrekted
Survivor 31 Jul, 2014 @ 3:08pm 
rock paper sissors shoot
Rye  [author] 31 Jul, 2014 @ 12:12pm 
@slenderbender

Hmm....Rock Paper Scissors?
Survivor 31 Jul, 2014 @ 12:09pm 
whos gonna buy this one?
Rye  [author] 31 Jul, 2014 @ 8:54am 
@Oh, you've redecorated!
Okay
Zeplija 30 Jul, 2014 @ 9:43pm 
While the subject still stands, may I have a double-quarter pounder with a 20 peice mc-nugget and bbq sauce? Oh, and a coke, too.
Please.
Rye  [author] 27 Jul, 2014 @ 10:38am 
Thought it was another troll
Rye  [author] 27 Jul, 2014 @ 10:38am 
Oops, sorry, i accidently deleted a comment that was asking for someone to play on Multiplayer, ill come play with ya sometime if you wanna play Versus/Campaign mode
Survivor 9 Jul, 2014 @ 4:04pm 
ok. ill post it in the bugs

Rye  [author] 9 Jul, 2014 @ 7:23am 
@UTBslenderbender

that..wasnt supposed to happen
Survivor 9 Jul, 2014 @ 12:34am 
i did double check. when you get to a safe house and a person died, when it starts up, it insta kills all dead people then it leaves up to 3 special infected in the safe room
Survivor 8 Jul, 2014 @ 9:58pm 
ok seeya. but really. pain pills would be nice. but you dont have to. just my idea.
Rye  [author] 8 Jul, 2014 @ 9:57pm 
ok, ima go get me some Large Fries
Survivor 8 Jul, 2014 @ 9:56pm 
im gonna go and not get bitten. i dont have time for mcdonalds. he turned into a zombie too, probably.
Survivor 8 Jul, 2014 @ 9:51pm 
errr a 20 peice nuggets, large fry, large coke, and no ketchup.