My physics professor uses flash games to demonstrate the things we are learning. He knows nothing about computers, still runs windows 7, and constantly talks about these programs and how they will always be great learning tools. I don't think he realizes that flash isnt a thing anymore and I'm excited to see how class goes when he tries to open one of his examples.

Allegedly, just change the time on your computer https://twitter.com/Tasselfoot/status/1349023841754996739 .

Which government (website) is this, out of interest?

It’s the French patent website, INPI

Have you tried Ruffle? https://ruffle.rs/