This game came with the Mikro-Plus interface, containing a 16K shadow ROM and joystick port. The ROM image can be found in the 'Additional material' section below. Fraser Ross created a Shadow of the Unicorn ROM Loader for the +2A/+3, which loads this ROM into RAM, allowing playing the game without the additional hardware device.
with Mikro-Plus 16k plug-in; first -and last- Mikro-Plus game
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