Apparently Cities: Skylines, a city builder like Sim City, produced by former 9 man, now 13 man, team Colossal Order and published by Paradox has reached half a million in sales. Honestly, glad for the small team and hopefully this will lead them to build other things. While I've heard it isn't the most perfect entry to city building out there, as a first time effort, it is supposedly a real good effort, easy to modify (already huge mod support, former Sim City graphic artists is modding for it) and they promise to make the experience only better with time.
Hell for $30 (well $35ish Canadian), if I had the money, I'd probably buy it and see what all the fuss was about.