Zsz Rar -

The extracted folder will contain the mod files ready for installation into the Sugary Spire directory. Select the files you wish to compress. Right-click and choose "Add to archive...".

the zsz.rar file from a trusted source like itch.io . ZSZ rar

the file and select "Extract Here" or "Extract to zsz/" using WinRAR. The extracted folder will contain the mod files