Players or teams compete in puzzle-solving (sometimes timed, sometimes not) in order to score points in different categories.
The first team (or player) to score a point in 4 of the 6 categories wins the game.
Every turn, the current player/team draws a card and hands it to the Dealer, a non-competitive figure that reads it aloud and then manages the competition between the people trying to solve the riddle.
There are 6 categories: Linguistics, Mathematics, Logic, Rebus, Manipulation and Observation