Based on 1986 SNK/Data East coin-op. PC versions: Hercules, CGA, EGA, Tandy
 Original 68K coding by Mark Bullock and Neil Metcalfe; Amiga conversion by Rick Frankish. Graphics by Peter Tattersall. Music by Jas Brooke. Inexplicably, all 8- and 16-bit home computer conversions (including the Amiga) were released in Europe in 1988, some 18 months after the initial Amstrad CPC release in late 1986.