7 Collectible Tokens: Millennium Puzzle, Millennium Key, Millennium Eye, Millennium Ring, Millennium Rod, Millennium Scale, Millennium Necklace Custom game board featuring Yu-Gi-Oh! Duel Monsters Custom Shops Custom Game Arenas Duel Arenas replace the traditional Houses. Yu-Gi-Oh! Custom Duels is now available in Duel Arenas, instead of traditional houses and hotels.