Dragon Quest Monsters 2: Maruta's Mysterious Key – Ruka's Journey is a Japanese Game Boy Color release that comprises one half of a two-part story. This entry in the Dragon Quest Monsters series continued the emphasis on creature collection and battles, but featured a different narrative path and cast of characters compared to its counterpart in the same release. Enix developed and published this game in Japan, offering a dual story experience to players.

Dragon Quest Monsters 2 - Maruta no Fushigi na Kagi - Ruka no Tabidachi (Japan)

Dragon Quest Monsters - Terry no Wonderland (Japan) (Rev A)