Drag your cannon around the striped area and shoot balls to get the pink and blue ball to touch each other for a few seconds. You will encounter several types of blocks as you progress through 40 levels. Grey blocks are fixed, green blocks can be moved and obey the laws of physics, yellow blocks can be destroyed by firing balls at them, and white blocks can be moved but have less friction than green blocks. Match or shoot under par to earn a medal in each level.