The game design was originally devised to be released for £4.99 on Amiga and ST, for the '16 Blitz' budget range. However, the license was added, the presentation modified, and the price tag multiplied. In 1994 Gary Dunne released (as freeware) his own interpretation of the original design, as Infection.

Contributed by Martin Smith (66852) on Sep 14, 2005. [revised by : Alaka (57323)]. -- edit trivia