Other wizard games and sports include Gobstones (a version of marbles in which the stones squirt foul-smelling liquid into the other player's face when they lose a point), Exploding Snap (a card game in which the cards explode), and Wizard Chess (in which the pieces are sentient and under the command of the player). The wizarding world is also home to a number of other wizard spectator sports, such as Creaothceann (a now-banned broom game from Scotland in which players try to catch rocks with cauldrons strapped to their heads), Quodpot (a popular game in the United States involving a Quaffle that explodes), and broom racing.