I did get back into Windows programming and I've ported the new versions of Firefight, Slay and Conquest (so far) back from iOS. Firefight and Slay are both now on Steam:
Conquest is still waiting for approval. I'd like to get them on the Windows Store (and Mac Store) too but when I looked into it it didn't look trivial to do. I'll need to buy a new Windows 10 laptop too, but I'm planning on that soon.
My problem is I've got about 15 different games and between them they run on Windows, iOS and Android so as a one-man outfit it's really hard for me to find time to work on individual games so progress can be really slow sometimes. Sorry!