Ruffle[0] can be embedded in your website to make flash work in modern browsers. Neopets actually did just this a few days ago[1] to bring back their catalog of old flash games.
So if you can find a way to write Flash (the old tools should still be fine, but I haven't looked too deep) you can leverage it and let folks play today.
So if you can find a way to write Flash (the old tools should still be fine, but I haven't looked too deep) you can leverage it and let folks play today.
[0]: https://ruffle.rs/
[1]: https://www.theverge.com/2023/7/17/23798368/neopets-relaunch...
Edited for citations