Muscle Fighters Arena is a 3D online fighting game that puts you in control of a fighter with unique attributes. The game features one-on-one battles where each fighter has different actions, allowing you to choose the one that suits your style best. With online and offline battles available, you can compete against users from all over the world or challenge a specific friend. The battle ends when one fighter's HP reaches zero or when time runs out. The rewards you receive will depend on the outcome of the battle.

The game offers simple controls with swiping and tapping gestures. You can move your fighter by swiping the left side of the screen and move the camera by swiping the right side. You can attack, avoid, and defend by tapping the corresponding buttons at the bottom right of the screen. Additionally, each fighter has a different skill attack that you can activate by tapping the yellow/purple button. Strengthen your favorite characters with gold earned from battles and gain an advantage in battle. The more you play, the higher your rank will be, and you'll be rewarded for each rank up. This free-to-play game is perfect for sports and fighting game enthusiasts.