After discussing a user issue with itch.io, I have managed to get this game to play properly in the itch.io app and in the browser on the game page.  I hope that adds convenience and consistency for users more comfortable with those options.  Thanks for playing my game.

When you click the red "Install" button in the itch.io app, be sure to choose "LegacyQuest(HTML).zip".  The game should download and install without any issues.