Muscle Boy is a free Android game developed by BIGDOG GAMES. The game is simple yet entertaining. It requires the player to tap the screen when the pointer points to the green and blue bars. The objective is to upgrade your boy and become the strongest boy in the universe.

The game has a perfect design and is full of funny moments. It is suitable for all ages and is totally free to download. The game also has full phone support, making it accessible on any Android device. Overall, Muscle Boy is an enjoyable game that can provide hours of entertainment for players of all ages.