Platform: Commodore Vic-20
A neat space shooter that was released by Imagic on the Atari 2600 and ColecoVision. However, the game was also seemingly due for release on the Commodore Vic-20 too.
In 2019, an AtariAge forum poster called “gorfulator” posted that he had come across a Vic-20 cartridge from a friend who worked at Imagic. His friend mentioned he had worked on a Moonsweeper game for the Commodore. By the looks of things, it was actually completed too.
There was talk of backing up and preserving the game, but nothing further has happened since. It is hoped that someone in the community will help to see the work preserved.
With thanks to Fabrizio Bartoloni for the heads up.