Doroppuboru 13

The casual puzzle Doroppuboru 13 offers you to play with balls of different sizes and purpose: football, tennis, balls for bowling, for ping-pongs, children's inflatable balls and so on. In the collision of two identical balls, a slightly larger ball is obtained. Round elements can quickly fill the playing field, so you need to use a merger as often as possible and receive new types of balls. When the last ball laid in the Doroppuboru 13 game algorithm is received, it will end.