Cities Skylines by Paradox Interactive have been getting good user reviews this week. What kind of town planner doesn't play city simulation games? I jumped on a VIP discount at Greenmangaming.com and it comes out to be about USD$21 (AUD$30).
So I'm impressed at the native support to import custom height maps from Open Street Maps. I think this is a good way to keep the game going for a long time. One user has already built the iconic city of Los Santos from Grand Theft Auto 5 and made it available under Steam workshop. Suffice to say that is one impressive mod!
I'm going to try and recreate something closer to home!