Left 4 Dead 2

Left 4 Dead 2

55 ratings
Game Modes: Co-op, Mutations
File Size
0.006 MB
Jul 2, 2013 @ 2:29pm
Aug 15, 2013 @ 2:14pm
5 Change Notes ( view )

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The infected have evolved to bite. And with each bite comes infection.

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 quickly.

But, the infected aren't the only ones who mutated. A new gene, the immunity gene, was found, giving immunity to bites, but it isn't permanent. It can happens once, maybe twice, or not at all. It's not controllable and it's completely random.

Fighting them head-on isn't always the best decision. Good luck.

I'd like to give a special thanks to Skullkan6 for requesting a mutation like this and giving me ideas and motivation to finish it. I'd also like to thank many members of the beta group for helping with the scripting problems I've had along the way.

Still a bit buggy, but it's playable. Have fun!
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i felt biters are more anoying like clickers or stalkers?
Midnight Aug 24, 2016 @ 1:13pm 
Biters with Special pls C:
Hoxten Aug 1, 2016 @ 5:37pm 
thus is realistic
Squidmann Feb 4, 2016 @ 12:22am 
Errr. this is cool and all but. the infected already know how to bite... how do you think the green flu spreaded? [SPOILERS FOR SACRIFICE COMIC -->] its not airborne. also in the part when louis finds out he isnt immune, a zombie bit him sooo. sorry, just wanted to share my knowledge.
Electric_Tails Aug 15, 2015 @ 8:49am 
i had this in the beta l4d 2 thanks for making it i nthe full l4d 2 :3
The Cliche Detective Nov 29, 2014 @ 9:48pm 
this is amazing I've been looking forever and I finally find it
Herbert West May 24, 2014 @ 4:25pm 
i was wondering, can you make without a mutation in another addon? i love this idea btw.
Munkee Feb 18, 2014 @ 3:44am 
love it, challenge. 10/10

but 1 thing you need to fix lol. i touched fire and it said i got bit.. XD

used the jump through fire shortcut on dead center and kept saying me and nick got bit XD
CriticalGore Feb 9, 2014 @ 11:06am 
I kind of like the idea of pills possibly hurting you because it's like an extra challenging gamble, I would love to play this on Realism! It looks great, I'm gonna go play it!
Pannuera Nov 22, 2013 @ 4:02am 
how run it?