The main role plays the ball. During the passage of the level the player must get to the door, passing all the obstacles by simple manipulation of the ball, such as move forward, backward and jumping, as well as to pass through all the rings. As soon as the ball passes through all the rings, opens the door to transition the player to the next level.
During the development of new versions of the game, the ball changed color and became not only red:-)
Fixed bug in main menu