Be the last man standing.
Everyone stands in a circle with someone in the middle. The person in the middle pretends to shoot someone in the circle. The person shot ducks down and the 2 people either side of the shot person turn around and shoot at each other and say "bang". The last person to say bang is out. Then the shot person gets back up . This continues. The last shot person comes to the middle. When only 2 people are left they stand in the middle back to back the shooter says "start walking" (the people in the middle walk away from each other) and when He/She says "bang" the people in the middle turn around quick and say bang. The first person to say it is the winner.