This game is best played outside or in a large room. The group should determine a start line and a finish line. One person is chosen as the "traffic cop". The rest of the players form a line at the start line about 15 to 20 feet away from the "cop" who is at the finished line and who has his back turned away from the group. The "cop" then says "green light" and the group slowly (or quickly) moves forward. At any time the cop can say "red light" and turn around. If he sees anyone still moving, they are out and the game continues. It is important that the "cop" say "red light" BEFORE they turn around to give the players a second to react. The last player not spied moving gets to be the "cop". Or if one of the players reaches the traffic cop and touches them, they get to be the next traffic cop.