Of the oldest and simplest games. Anyone who looks lucky wins!
If the game is accompanied by a small bet, usually the winner gets the coin. What romantic times! Here we have a classic case of a 50-50% chance of winning for each of the two players. If the coin is not fake, then it is certain that over 50-50 years will be verified. So we have an honest chunk that is judged only by luck alone. Perhaps there is no better example than..