They're really old games that used to run on XP or earlier systems. And of course, many of them don't work as expected when running on newer systems.
I created a Gen1 XP VM with Hyper-V Manager and installed the Integration Components (see Is it possible to get a Windows XP SP3 Hyper-V virtual machine properly working on Windows 10 Pro? - Super User). In the XP VM, I can see the display adapter enabled and I can access the internet. But I can't run any program except for those built-in ones. The programs either report an error or display messy mosaics.
I checked the MS official support list and know that the XP has been given up as it's really too old (so are those programs).
Also, sharing GPU is a problem. (remoteFX is removed and GPU partitioning doesn't support such old guest systems.
So I would like to know:
Have any guys successfully run games on a Hyper-V XP VM?
If yes, what is the magic that I missed?