A plumber named Mario found himself in an ancient dungeon, which is a tangled labyrinth. This dungeon is inhabited by monsters that will hunt our hero. You are in a new exciting online game Mario Run 3D will have to help the character save his life and get out of the maze. Before you on the screen you will see your character, who will run through the corridors of the labyrinth gradually picking up speed. Look carefully at the screen. Controlling your hero, you will have to help him avoid various kinds of obstacles, jump over gaps in the ground and avoid falling into traps placed everywhere. Along the way, you will have to help Mario collect gold coins and other useful items scattered around in the game Mario Run 3D.