This math puzzle isn’t as simple as it seems! You’ll see a great number of balls on the screen. Each of them is marked with a certain number. You have to control them moving them around the screen and make sure they collide in the right order. Then you will be able to finish the level and get to a new one. Be careful – one single mistake will send your efforts down the drain and you will have to start from the very beginning! Keep trying until you pass all the levels!