Because .sb3 files are structurally identical to ZIP files, some operating systems or email clients automatically rename them to .zip for compatibility.
If your files are correctly formatted in the root of the ZIP: Locate your file in your file explorer. Enable File Extensions : Ensure you can see the : View tab > check "File name extensions". Right-click the file and select Delete the extension and type in its place. convert zip to sb3 updated
: Can extract assets and JSON from packaged files back into a format compatible with Scratch. Technical Structure of an SB3 File Because