Dragon Quest Monsters: Terry’s Wonderland had a remake for 3DS last year. Now, Square Enix has registered “Iru to Ruca no Fushigi na Fushigi na Kagi”.
According to Game Jouhou, this trademark translates to “Iru and Luca’s Wonderful Mysterious Keys” and could be pointing to a “Dragon Quest Monsters 2” remake for Nintendo 3DS.
Dragon Quest Monsters 2: Malta’s Mysterious Keys (Malta no Fushigi na Kagi) was released for Gameboy Color in two versions: Dragon Quest Monsters 2: Malta’s Mysterious Keys – Luca’s Journey ( Cobi’s Journey in West) and Dragon Quest Monsters 2: Malta’s Mysterious Keys – Iru’s Adventure (named Tara’s Adventure in West ).
This trademark is for one game, so perhaps this possible remake is combining both versions of the original DQ: Monsters 2 for GB Color.