The Wing of Madoola

The Wing of Madoola
Developer: Sunsoft Publisher: Sunsoft Platform: NES Released in JP: December 18, 1986 This game has debugging material.

The Wing of Madoola is a pioneering action-adventure game that never got a release outside of Japan.

Sprite Viewer

There is a sprite viewer hidden in the game's code, presumably to allow the developers to easily check how the sprites looked onscreen. Technically, it displays every tile in CHR ROM, but the tiles are arranged so the sprite graphics look correct, as opposed to the background graphics. The Game Genie codes LYKLZY and SLKLLY will jump into the sprite viewer when the game boots. Note that the sprite viewer doesn't load any palettes, so all the sprites will show with the palette from the title screen. The Select button will jump to the next sprite bank, and the Start button will quit the sprite viewer.