Version 0.6 is an early-access build. The game has since progressed much further (recent versions are in the 0.14+ range).
If you downloaded this from a third-party site rather than the official developer platforms (like Patreon or Itch.io), it is always a good idea to scan the .zip file with updated antivirus software before opening it. File: ProjektPassion-0.6-pc.zip ...
The "pc" tag means this specific file is formatted for Windows or Linux operating systems. How to use this file: Version 0