Both feature Dizzy an anthropomorphic egg designed by the British-born Oliver Twins.
The 8-bit versions of the game were released for the ZX Spectrum, Commodore 64 and Amstrad CPC with mazes of abstract design.
The 16-bit versions released for the Amiga, Atari ST and DOS have environments that are identifiable as real-world locations such as gardens, harbours, and graveyards.
Dizzy is pursued by four mushroom-like monsters: Bonzo, Wizza, Pippa, and Fido.
The game was playable within three days of work; the developers only took two more weeks to finalize the graphics, interface and music.