Stronghold - Stronghold Crusader is a RTS game from the series from Stronghold.
Dwarf Fortress - Dwarf Fortress is a single-player fantasy game with two modes: fortress and adventure.
ANNO - ANNO is a city-building and economic simulation video game series, with real-time strategy elements.
RimWorld - RimWorld - A sci-fi colony sim driven by an intelligent AI storyteller.
Tropico - Tropico is an Addictive, Strategy, Construction and Management, City Building, Sandbox and Single-player Simulation developed by PopTop Software.
Castle Story - The creative voxel-based strategy game in which you explore floating islands, architect epic castles, and defend against hoards of enemies with your friends!