I'm in the process of getting a Realm Factory 2.0.0 up and ready to go. This has switched to MonoGame instead of XNA, and also has updated to VS 2019 and .NET Framework 4.8. I wanted to update it to .NET Core or even .NET 5, but there were some resolution/scaling issues that I don't think I have time to address right now. Either way, it is a giant step forward.
In the tiny chance that somebody out there is interested in giving it a whirl, I've got a branch that has the fixes ready to go (release/2.0.0 and develop both have it). I want to get some artifacts up soon, but have at least one more issue to sort through (stripping out the EULA) first.