FreeCiv - Freeciv is an open-source, turn-based strategy game based on Civilization II.
Megapolis - The #1 citybuilder game in more than 20 countries with over 10M downloads!
0 A.D. - 0 A. D. is a free, open-source, historical Real Time Strategy (RTS) game currently under development by Wildfire Games, a global group of volunteer game developers. Download 0 A. D.
SimCity BuildIt - Build, craft, and control! SimCity BuildIt is an all-new SimCity game designed just for mobile.
Sid Meier’s Civilization VI - Sid Meier’s Civilization VI is a Turn-based Strategy, War, Tactical, Single and Multiplayer video game created by Firaxis and published by 2K.
OpenTTD - An open-source clone of the classic game ...