[RogtamBar]

>polished boardgames that you can play on your own with a computer, and I think it's worked out really well.

Paradox is also in the business of making boardgames, albeit with way more elaborate rules.

> your own with a computer, and I think it's worked out really well.

I don't think it has. The AI in Civ series is just bad, and only gets by through rampant cheating. Civ V was out for years, and they haven't managed to do anything decent with the combat AI. Nor prevent the AI from doing stupid things.