I actually haven't tried this yet, but as a Civilization fan and based on the screenshots (lot's of depth and Win32 UI is a nice touch) this looks enticing.
Good to hear it's addictive.
One of my post played games is Evolution of Ages: Settlements. It looks like this:

It was made with VisualBasic, the developer wanted to make a sequel, but he realized VisualBasic was depreciated.