Price: $4.99 Free (Free until November 4)
https://www.microsoft.com/en-us/p/megapolis-2010/9p09m2sg1trq
Casual city building. Become an architect. Manage the small polis.
If you're having trouble claiming the game through the browser link, just search for it in the Microsoft Store app and claim it there. That's what I did and it worked fine in the app for me, but not through the browser.