Is there such an outdoor game in Britain or the United States? And if there is, what's its name? There are two groups with numbers written on their members' forehead. The point of the game is that the players have to detect the numbers on the opponents' forehead. When one of the players detects one of the opponents' number, he/she says the number and that opponent's name aloud. (e.g. thirty-two twenty-nine John). If he/she does not know the name, the opponent can be identified another way (e..g. in white T-shirt etc.) Players may not hide the numbers with their own body but can use any object in their environment like e.g. trees.