DS owners may want to take a gander at this promo we spied GameStop readying up for Square Enix's Dragon Quest Monsters: Joker game.

According to their site, visitors who purchase the game are entitled to an extra trinket: the Green Bays Map Screen Wiper. The accessory doubles as both a map of the game's world, and as a handy screen wiper to keep your game view unobstructed on either screen.

GameStop further indicated what appears to be the game's release date for North America: November 6, 2007. The accessory is reported to be included with the game pack (US$ 39.99), with supplies advertised to be limited. The pack will be available for both the GameStop retail chains and their online shop. That's all the info we've got for the moment - drop by again in case we pick up more details.