ANNO - ANNO is a city-building and economic simulation video game series, with real-time strategy elements.
Homeworld - Homeworld is an Action-Adventure, Science-fiction, Real-time Strategy, Real-time-tactical, Single and Multiplayer Space Simulation created by Relic Entertainment and published by Sierra Entertainment.
Stronghold - Stronghold Crusader is a RTS game from the series from Stronghold.
Sins Of A Solar Empire - Sins of a Solar Empire is an Adventure, Strategy, Real-time-strategy, Science-fiction, Exploration, Aliens, Single and Multiplayer Space Simulation developed by Ironclad Games and published by Stardock.
STAR WARS Galactic Battlegrounds Saga - STAR WARS Galactic Battlegrounds Saga is an Action, Real-time Strategy, Combat, and Multiplayer video game created by Ensemble Studios.
Planet Capture - Browser-based, sci-fi space RTS game.