• Windows: https://fpdownload.macromedia.com/pub/flashplayer/updaters/3...
• Mac: https://fpdownload.macromedia.com/pub/flashplayer/updaters/3...
• Linux: https://fpdownload.macromedia.com/pub/flashplayer/updaters/3...
You can just open the swf file you want and run it directly. It's great.
Linux users might alternately want to use the community-packaged Flatpak: https://flathub.org/apps/details/com.adobe.Flash-Player-Proj... All other links come from https://www.adobe.com/support/flashplayer/debug_downloads.ht...
Kind of stupid that these will also presumably be removed from Adobe's official download page, since this is exactly how Flash content ought to be run going forwards: as individual legacy files you've downloaded and inspected. I would advise downloading and backing up a copy now.
Flashpoint is an archival project