A downloadable game

The royal puzzle download page for Windows Executable and hint sheet. 

Main site is: https://www.adrift.co/game/1478

On that site I also maintain a high score list as well as on:  ifdb.org

Download

Download
TheRoyalPuzzleV3.zip 5 MB
Download
RoyalPuzzleHintSheet.txt 1.8 kB

Install instructions

Executable. Small risk of false positives. If so, check it at virustotal.com if it makes your feel better, which is understandable.