. . "Nintendo video games" . . . "Kingdom hearts 3D. Dream drop distance" . "\"Darkness becomes light, light falls into darkness. In preparation for an impending threat, Sora and Riku enter the Sleeping Worlds to take the Mark of Mastery exam. They will face new enemies and make new friends in worlds they've never set foot in. If they can successfully unlock seven Sleeping Keyholes and return to their world, they will retrieve a great power and be deemed true Keyblade Masters.\"--Container." . "Dream drop distance" . "Fantasy games" . "Nintendo 3DS video games" . "Video games" . . "Dream drop distance 3D" . . "Computer games" . . . .