Water Wars is a game or competition--here is how you play:  Opponents go to opposing battle stations with buckets of water balloons.  Each battle station has a water balloon launcher.  Place a balloon in the launcher, pull down on the handle, aim, and fire!  Your balloon soars high through the air and comes crashing down on your opponent's battle station.  There are strategically placed slots and holes in the structure that allows the water to come through.  You might get sprinkled, sprayed, or saturated, but watch out, retaliation comes quickly....!

See how children play in WaterBattle: