To add to this Nathan Briggs does reverse engineering to make old games work on modern Windows. Windows 11 has corrected faults in it's APIs that probably should have been fixed but somehow worked with older versions of Windows that gamedevs built around. He often posts the solution and sends it GOG. Often this involves updating a community maintained wrapper around the DirectX APIs that GOG uses.

I think you will really like this content.

https://www.youtube.com/@nathanbaggs