Their position at the end of the mode list suggests they were 'hacked in' somewhat later in development. (Level modes: 1E and 1F) Two level modes of a horizontal layer 1/background levels (1E) a horizontal layer 1/layer 2 levels (1F), and they are both fully functional to play. ( Sprite ID: EC) When put into a level, it will start out with a horizontal Layer 1 section, then transition into a vertical Layer 2 section. Unused Level Modes Layer 1 horizontal into Layer 2 vertical Not to mention, none of the Mario games alone have the word 'And' in it. Even if this was used in the title, it would be very odd to say.