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The idea of the game is to find out which well-known person or fictive character has been assigned to oneself. This could be an actor, a singer, an athlete, or a character from a cartoon - or movie. While the players know about the characters of each of the co-players, the own one is not visible for oneself, since it is written on a piece of paper and attached to one's forehead or back. The only way to figure out one's character is to ask polar questions, i.g. those that can be answered with "yes" or "no". Usually the game works in turns. If you get a "yes", you are allowed to continue asking questions and if you get a "no", it is the next player's turn. The one who finds out their character first wins the round.
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Especially with kids on the primary levels this game might turn out to be complicated if there is only ten minutes time. More context might be needed for everyone of them to be on the same page about which characters to pick and how to play the game in its details. I suggest to incorporate this game into a wider context (movie, novel, stories) which limits the range of characters and provides a certain set set of vocabulary as well.
