Based on 1987 Vortex Software/Gremlin Spectrum release; Amiga conversion ported from 1988 Vortex Software/Gremlin Atari ST release.
 Game concept & original Spectrum code by Costa Panayi of Vortex Software. Atari ST coding by Jason Perkins and Costa Panayi; Amiga conversion ported from the Atari ST by Bill Allen.  Magazine Publisher: Zero no. 7, May 1990 [Source: Amiga Magazine Rack].