Description UT3 comes with a few mutators already, two of which are there to tweak the speed, one faster(1.35x) and one slower(.80x). My mutator puts this tweaking into your hands. It currently accepts values between 25 and 400, providing game speeds ranging froUT3 comes with a few mutators already, two of which are there to tweak the speed, one faster(1.35x) and one slower(.80x). My mutator puts this tweaking into your hands.