The selection of mutators is now based on various controlled chaos gameplay elements, instead of being fully random (moveordiegame.com)
Also the most imteresting part is the dynamic mutators which will change how the game works. (metacritic.com)
Once they arrive, you'll be able to create new Custom Matches with the rules and settings made especially from your tastes, while our sweet «Mutator Mashup» playlist allows you to enjoy pre-determined weirdo matches in public games like you've never seen them before. (wholesomegamer.com)