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.
Stronghold - Stronghold Crusader is a RTS game from the series from Stronghold.
Terraria - Dig, Fight, Build! The very world is at your fingertips as you fight for survival, fortune, and glory.
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.