Block'hood - A neighborhood-building simulator
OpenTTD - An open-source clone of the classic game ...
Streetmix - DIY urban planning
SimCity BuildIt - Build, craft, and control! SimCity BuildIt is an all-new SimCity game designed just for mobile.
Cities: Skylines - Cities: Skylines is a Construction and Management, City Building, and Single-player Simulation developed by Colossal Order and published by Paradox Interactive.
StreetPlan.net - Free complete-street cross-section design tool. An alternative to Streetmix.net, with better graphics, more options, and best practice guidance.