What the Heck?*

Players receive a set of cards numbered from one to fifteen. During each round, a price token is drawn randomly, which can have either positive or negative points. Players secretly choose one of their remaining cards and reveal them simultaneously; the highest card wins the prize if it's positive, while the lowest card wins if it's negative. However, if two players play the same highest or lowest card, they cancel each other out, and the prize goes to the next player.