Well, it doesn't even seem to work in 10.5.8 on a G5... oh wait, I just got 20 Greatest Games, #3: '86 World Series, Game 6 to play from this link...
So, it looks like Leopard/10.5 may be a temporary solution.
Related: How to install macOS Mojave on MVware on windows How to Install macOS Mojave on VMware on windows – Installation Guide. To install macOS Mojave on VMware on windows, you need WinRAR or 7zip, macOS Mojave 10.14 VMDK file, VMware Workstation/Player.
When I RUN the Flash Player install application, I get the Adobe Installer box, but it is blank. I have let it sit for extended time (over 30 minutes) and is does nothing. When I close the box, Windows Explorer opens and looks like it is on the Adobe website, but there is nothing displayed in the viewing area. I borrowed a Mac laptop and can view the site on that so I know it is not the site. Shows that the latest Adobe Flash Player 11.4.402.265 is installed. That's what 11.4 r402 signifies. However, that's only for now, since it's the first in the 11.4 category. 2012 10:14 AM in response to jvaneck In response to jvaneck.
Leopard requirements/10.5.x...
* Mac computer with an Intel, PowerPC G5, or PowerPC G4 (867MHz or faster) processor
minimum system requirements
* 512MB of memory (I say 2GB at least)
* DVD drive for installation
* 9GB of available disk space (I say 30GB at least)
You have to call Apple & likely ask for a Product Specialist to get it, if they still have it! Helps to tell them you have an iPad/iPhone & you can't run 10.6.
Download Adobe Flash Player For Windows 7

There are workarounds if the 867MHz is the only hangup...
I have Mac Version 10,1,102,64 What version do you have?
Free Adobe Flash Player For Mac
Or maybe free 3rd party...
May 1, 2011 12:56 PM