(Invoking RelatedSearchTerms per assistant guidelines.)
When Adobe killed Flash, browsers stopped supporting the plugin. If you try to run an old .swf file today, you get a puzzle piece icon and an error message. So, how does around this?
Weaknesses:
So, the next time you click "Play" on a 15-year-old stick figure animation and it actually responds to your keyboard—you will know exactly how the magic happens. It is the work of preservationists, emulation coders, and the resilient bones of the old web.