Some days, you just want to clear your head, roll some marbles, and play! Grab the Moovz board, pick a card, set up the game, and make the marbles reach their designated end position. You're a wizard. Well done. On other days, you're in a cheeky mood. You want to keep the marbles rolling in a competitive heated atmosphere. Duel mode is made for that. The rules don't change, but the competition is on.