Since the original GemArch website is no longer active in its original form, the most reliable way to get a verified experience is through legacy game aggregators.

Because Butterfly Escape was written for older versions of Windows, it often struggles to "save" the registration key. Right-click the game icon. Select

Is there a appearing when you enter the key?

If you are searching for a public registration key, you might run into several common issues:

If the game asks for the key every time you open it, Windows is likely reverting the save state. Set the executable to to ensure the registration stays "verified." Where to Find a Legitimate Copy