I get the following error on Mac OS, trying to run the demo from the Applications folder (I also tried an external drive):

Error
Please move the Game.app to a different folder.

According to another player who reporterd the same issue:

>all I had to do then was move the game outside of the "star-knightess-aura-macos" folder that it was unzipped into, and it then opened and worked

Hope this helps!