To do this, set up a virtual machine and install the operating system of your choice (Windows is a good choice.).

In essence, you’re running an operating system on top of your existing operating system.

Free apps like VirtualBox (and premium ones like VMWare) can create a virtualized environment that poses no immediate threat to your system. If you were to run an older version of Flash that still technically works, you should probably do so in a secure environment like a virtual machine.

We include this information here for informational purposes only. It has security vulnerabilities, and there are no more legitimate, official download sources. RELATED: How to Play Old Flash Games in 2020, and Beyond How Do I Run the Outdated Version of Flash? Warning: We really do advise against running an outdated version of Flash. In order to use Newgrounds natively, you can either use the Windows-only (and somewhat outdated) Newgrounds Player, or you can download the Ruffle browser extension and try that instead. And, of course, the entire Newgrounds library is still available.

Flash back express player