Scratch has since imported extension blocking, and there is no way to load experimental extensions anymore.
How to use:
- Make sure you have the script enabled and navigate to scratch.mit.edu.
- Click the GM/TM button in your URL bar and click on ```
- Paste in the direct links to the Scratch extensions you want to load, each link on a separate line.
- Go to any Scratch project and wait for the scripts to load.
If your scripts are not loading, make sure you allow unsafe scripts to load. ONLY ALLOW SCRIPTS THAT YOU TRUST! I AM NOT RESPONSIBLE FOR ANYTHING BAD THAT MAY HAPPEN.