Mutant is an online mobile game, arcade top-down shooter game, in which you can be a lone hero in 24 single-player missions, or join your forces with other users in multiplayer mode and earn 22 achievements as you save mankind from a hideous threat, is free to play on Android devices, from Alawar Entertainment.
Download the game at:
https://play.google.com/store/apps/details?id=com.alawar.mutant