All the players are blindfolded, the leader hides an alarm-clock somewhere in the room. The players stand along the wall, they listen to the ticking of the clock and cautiously walk in the direction of the ticking, the leader noiselessly changes the location of the clock several time during the game. Any player who comes to the clock nearer than half a metre gets a point. The player who has the greatest number of points wins.
Source: From the original site.