The game is easy to learn, but like all good reflex-based puzzlers, is hard to master. You steer the ball only with the left and right arrow keys. Game speed can be adjusted if you find the action too fast - which occurs more frequently than not. Crisp graphics and smooth animations round off this entertaining underdog. All in all, a very fun and quite addictive bouncing game from Japan that should appeal to all fans of arcade-style puzzle games. For more Bound games, check out the author's website below. Highly recommended!