The franchise includes several spin-off games, including the "Dragon Quest Monsters" RPG. The series has also inspired arcade games such as the Japanese "", where players compete for real-life cards with monster data that the arcade game issues to the players through a slot on its front. The latter is the only spin-off series to have none of its titles released outside Japan. The "Mystery Dungeon" and "Fortune Street" series use characters and other elements from "Dragon Quest" games, and the Mystery Dungeon series has gone on to spawn its own franchise.