Fun concept! Would be nice to have some difficulty levels, as I personally found it a bit easy.
On a separate note, if you're planning to release more games made with pygame, I would recommend looking into Auto Py to Exe, which lets you compile .py into .exe files (so people don't need to install python/pygame), or pygbag, which (for a bit more work) lets you run your games directly in the web browser. Happy coding!