You may wish to include some instructions on how to run your project, an .sb3 isn't a very well-known format outside of Scratch users.
If anybody reading is having trouble:
- Download the project files
- Visit https://scratch.mit.edu/projects/editor
- Navigate to the document icon (sheet of paper) and select "Load from your computer"
- Upload the project files
Controls must be discerned by inspecting the source code blocks. I'm not sure I'd call this a game, but it looks like you had fun with it