Monster Friends is a genre of Survival Defense Game released by AFEEL, INC, a Korean mobile developer. It’s was available on Jan 7 as free-to-play version. Before that, there are two other games for friends series: Army Wars Friends and Jean's Boutique Friends. All are them are free to download in Google Play.
Mutant Monster Friends is also a cartoon game genre. Players will be a hunter to kill mutant monsters in 5 different areas. There are 4 characters to be chosen with different abilities. With the power-ups and updated weapons, players can easily get through all the missions. This game takes full advantage of the social features. After connecting to Facebook, players can join the hunter with friends. Extra money can be earned in the story mode with Facebook account. Players can get money every time players share their activities on Facebook.
If players think that money and gold are hard to earn, just download this cheat version to your Android as they are unlimited: