Version 1.00 is about the time the developer started making games.
There are a lot of faults, but I made it hard.
Would you like to try it?

Right-click the game name in the STEAM app.
Under Properties, click the Beta tab.
Select version 1.00 from the drop-down list.
To undo, select "None. not participate in any beta".

Thank you for your playing!
(Note that the STEAM achievements are shared by both versions.)