Planetbase - Planetbase is a strategy game where you guide a group of space settlers trying to establish an outpost in a remote planet.
ANNO - ANNO is a city-building and economic simulation video game series, with real-time strategy elements.
Stellaris - Stellaris is an Adventure-based, RTS (Real-time Strategy) Space, Sandbox, Sci-Fi, Single and Multiplayer video game created and published by Paradox Interactive.
Stronghold - Stronghold Crusader is a RTS game from the series from Stronghold.
Startopia - Micromanage a network of space stations to rebuild them into a thriving community.
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.