Yu-Gi-Oh! Duel Monsters (1988, Game Boy) (New) Yu-Gi-Oh! Duel Monsters II: Dark Duel Stories (1999, Game Boy / Game Boy Color) (New) Yu-Gi-Oh! Dark Duel Stories (2000 Japan, 2002 U.S., 2003 Europe, Game Boy Color) (New) Yu-Gi-Oh! Duel Monsters 4: Battle of Great Duelists (2000, Game Boy Color) Yu-Gi-Oh! Duel Monsters 6: Expert 2 (2001,…