Flex It 3D: Pump those Muscles is a free Android game developed by PixUp Games. It falls under the category of puzzle games. The game is designed to help you get a workout while having fun. It is a great way to stay active and enjoy your workout at the same time.

The game is easy to install and has a user-friendly interface. It is suitable for people of all ages who want to stay fit. The gameplay is simple, where you have to flex your muscles to lift weights and complete various exercises. The game has a variety of levels that increase in difficulty as you progress. There are also different types of exercises that target different muscle groups. The game is a great way to stay motivated and track your progress.