The developers of the project promise to gradually expand compatibility with flash in the future. Early Flash animations and games will run fine. It should be noted that at the moment not all Flash content can be played using the emulator, but most can still be played. Ruffle detects all existing Flash content on a website and automatically processes it in the Ruffle Player to ensure smooth updates for websites that still rely on Flash content. The emulator is able to work in all modern operating systems (Microsoft Windows, Mac OS X, Linux) as a standalone desktop application, as well as in all popular web browsers (Mozilla Firefox, Safari, Google Chrome, Microsoft Edge, Brave, Opera, Vivaldi) thanks to using WebAssembly. With this application, you can easily play Flash content as if the Flash is still installed.

supports playing locally downloaded/stored *.swf files (as long as they're not published for the AIR desktop runtime) + thanks for /u/PornoOnMyAppleIIe for pointing out the hidden option to enable this.Ruffle is a free Adobe Flash Player emulator written in the Rust programming language.

If it works for you then consider enabling this option yourself in 'about:config' browser DPI scaling is disabled due to poor flash support for high DPI displays. no flash updates/no browser update (update system deliberately crippled so practically will work forever) You can use my already packaged portable version of Firefox from this link: In addition to the tutorial I also had to break the Firefox update services, because at some point it would update itself silently and break the flash plugin. Following this tutorial I've managed to put together an older portable Firefox browser (ver.70) packaged with an older Flash player (that doesn't contain the time bomb).

Firefox flash plugin for mac