OBB installation location -> /sdcard/Android/obb/com.pixelbite.mutant/
For all those adventure shooting fans out there, this is the best game you have got. - APKAward.com
Your goal is to destroy all mutants, destroy their nest, prevent them from spreading. As the game progresses, the number of mutants you encounter will increase and the area to be cleaned will also expand.
The key to keeping life is to have more mighty fire and thick armor, to collect props from the killed mutants to upgrade weapons and armor. What are you waiting for? Quickly deep into the abyss, eliminate alienation, save the world!