A contest by the publisher invited ace players to register with them if they achieved scores over 30 thousand points; eligible players breaking that threshold (and over 4 thousand of them responded) were entered into a draw to win the original coin-op this game was a conversion of, to install in their very own living room! The eventual winner of the draw was one Ian Clark of Newcastle.
The Amstrad CPC version of Moon Cresta
uses the LENSLOK copy protection system.
With this system the game loads to a screen that displays a large 'H'. The player must line up a supplied lensing device with this 'H' and, from a distance of about one foot (30.5 cm), view the screen with one eye. The lens decodes a two character security code that must be entered before the game can be played.