OpenTTD - An open-source clone of the classic game ...
ANNO - ANNO is a city-building and economic simulation video game series, with real-time strategy elements.
Stardew Valley - Stardew Valley is a 2D Awesome, Action, Role-playing, Crafting, Top-down, Building, Sandbox and Single-player video game create by ConcernedApe and published by Chucklefish.
Stronghold - Stronghold Crusader is a RTS game from the series from Stronghold.
RollerCoaster Tycoon Classic - Create and run amazing parks on your iPhone or Android.
The Settlers Online - The Settlers is a free web browser based strategy game along with a gameplay that drops anywhere between Age of Empires and the online strategy style.