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RELATED: How to Play Old Flash Games in 2020, and Beyond How Do I Run the Outdated Version of Flash? Warning: We really do advise against running an outdated version of Flash.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.

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