One player is choosen to be the shooter and they are blindfolded and given a water pistol. The other players then stand in the playing area. They cannot leave the bounds of the playing area. The blindfolded player is then taken to the centre of the playing area and spun around. The game then starts. The blindfold player must try to squirt with their water pistol the other players. They mustn't use a spraying action. Anyone hit is out. The players who can see should try to catch out the other players by calling out when near one of them, then move out the way in time.
Source: From the original site.(Submitted by: Mike)