It looks like Microsoft 3D Moviemaker, which is from a similar era and purpose to Stunt Island, has had its source code released to the public simply because someone asked for it:

https://arstechnica.com/gadgets/2022/05/microsoft-open-sourced-the-code-for-1995s-3d-movie-maker-because-someone-asked/

This will allow others to expand and extend the capabilities of the original game.

This does make me wonder- could the same thing happen to Stunt Island if someone asked?

Granted it might be a long shot in Disney's case, but who knows, perhaps they'd be willing to release Stunt Island's source code too? What do you think?