Based on similar archives in the "indie/itch.io" ecosystem, this file typically contains:
.dll (Windows) or .so (Linux) files required for the software to run. Godsoftheharvest.7z
To access the contents, you will need a utility that supports the .7z format: 7-Zip (Official) or WinRAR. macOS: The Unarchiver or Keka. Based on similar archives in the "indie/itch