Check out the Official Rules
Roundnet is a team sport played by two teams consisting of two players each. Opposing team members line up across from each other with the Spikeball™ roundnet set in the center. A point begins when the server hits the ball off the net towards the opposing player. After the service, there are no sides or boundaries. The object of the game is to hit the ball off the net in such a way that the opposing team cannot successfully return it.