So, official Flash support from Macromedia Adobe is finally coming to an end. And this doesn't just mean there won't be any updates, it also means that all existing Flash installations will work. Gotta love built-in kill switches.
In practice this is an issue for older, Flash-based content that will now become inaccessible. Fortunately there's some alternatives. Gnash is dead and never went anywhere, of course (as seems to be the case for many GNU projects), but Newgrounds, which obviously has a huge backlog of Flash-based content, has a
player here, and there's also a played called
Ruffle under active development.
I haven't tried either, but may in the future. Prequel (the webcomic) in particular has had some very cute and cool Flash minigames in the past, and I'd very much hate to see these get lost and become inaccessible forever.