Clicker Heroes is an online mobile game, clicker adventure RPG role-playing game, tap to attack monsters, hire and level up heroes to unlock their unique abilities, slay monsters for gold, find treasure, and explore new worlds, is free to play on Android devices, from R2 Games.
Download the game at:
https://play.google.com/store/apps/details?id=air.com.r2gamesusa.clickerheroes