My famous Aces up solitaire game now has the code available for Windows 3.1 and Windows 10. It was tested with Delphi 1 and Delphi 6. It has a Virtual Registry(SINCE WINDOWS 3.1 DOESN’T HAVE HKEY_CURRENT_USER HIVE) Its basically a INI file used on Win32 registry calls like RegQueryValueEx and RegSetValueEx. The API that allows some of the features only found in Delphi 2(Win32) or higher I call it Delphi 32s.