Atari 2600 version
The Atari 2600 port was never completed. A limited run of about 200 cartridges containing the uncompleted game was sold by CGE Services Corporation
at Classic Gaming Expo 2001.
Spectrum version bug
The Spectrum version shipped with graphical corruption appearing at the bottom of the screen at the end of a level. A fixed version is available online via the World of Spectrum website.