Tales of Graces was a Japan exclusive Wii game that contained a cool DS bonus game. Once the main character speaks with the Turtle Merchant by the dock, the Kamenin Merchant (Turtle Merchant) DS Download Play game can be pushed to an empty DS.
This is a roguelike dungeon crawler similar to the Mystery Dungeon games. Then, depending on performance, this content gets uploaded back to the Wii where items are rewarded to the player.
This DS bonus game was eventually released as a stand alone DSiWare title (Japan only).
Tales of Graces was eventually ported, translated, and later remastered, as Tales of Graces f. Sadly, this bonus DS option was removed from those later ports.
