Shifting World for the 3DS.  Based on the Portal-inspired Flash game called Shift, Shifting World on 3DS features the same basic premise but with added features and expanded content. Shifting World has players guiding a man who has been forcibly transported into another dimension. To help the character find his way back home, players must run, jump, and "shift" the environment -- transforming black into white and vice versa -- so the character can find a path toward each stage's exit. The game uses a minimalist, black-and-white art style to make shifts in the environment easier to discern. The 3DS version features two play modes (adventure and time attack), larger maps, and a 3D viewpoint.