It's said Spikeball is a combination of volleyball and foursquare with a dash of trash talk thrown in -- it's a great game to play at the beach but can just as easily be played at home in your backyard.
It's played with 4 people -- two teams of two -- with a taut, ankle-level, Hula Hoop-sized net placed between teams. The net looks similar to a mini-trampoline with a net instead of a jumping base. Gameplay goes like this: Team A serves the palm-sized ball into the net, and Team B has 3 hits (if needed) between the two players to return the ball by bouncing it off the net back to the other team. The first team to score 21 points (by a margin of 2 points) wins [source: Spikeball].