No Mutants Allowed

The mutants are charging your base but you aren"t going to let them in.  You are going to defend your base at all costs.  In the No Mutants Allowed tower defense game make sure you shoot them all and use all of your special abilities to defend your base.  This is a cool and different kind of tower defense game for you to play.  The more mutants you kill the more upgrades and extras you can buy to defend your base.