Battlefleet Gothic: Armada - Space Marines

Battlefleet Gothic: Armada is the RTS videogame adaptation of Games Workshop's classic tabletop game, pitting the Chaos, Imperium, Eldar, and Orks against each other in visceral space-battles. Additionally an extensive multiplayer mode with persistent fleets where up to 4 players can battle simultaneously, Battlefleet Gothic: Armada also features a big story campaign, taking place during the 12th Black Crusade and putting players in the middle of the Gothic War that raged between the Imperium and Abaddon the Despoiler. Players will be at the centre of every fight, commanding fleets of gigantic ships as the Chaos unleash a sequential chain of surprise attacks on Imperium worlds at the start of 20 years of warring in the sector.

Dark Reign narrowly beat Total Annihilation as the first RTS to incorporate 3D movement and positioning. This increases the strategic advantage of hills and mountains. Each mission puts you in the role of commander of either the Imperial army or the Freedom fighters in a campaign to undermine and eventually destroy the opposing force. This game has many unusual features for the RTS genre. AI patterns you to simply give a unit the order "Search and Destroy" and it would drive off towards the enemy's last known location, in search for something to kill. There is also "explore" mode which let your units do all the map exploring for you. A mission/campaign editor is also provided.

Ancient Space is a story driven single player real time strategy game where you take command of a fleet embarking on a scientific mission to chart undiscovered reaches of space called ‘The Black Zone,’ Overcome overwhelming odds and fight for your life, your faith and the survival of your ship and its crew.

Three thousand years in the future, mankind has carved a bloody path towards domination of the known universe. Self-proclaimed as a divine race and beyond reproach as a species, they view all alien races as inferior. With fleets of organic starships genetically engineered for war, humanity sets out to conquer the last remaining independent galaxy - The Universal Heart. As Captain Iconah, you are commissioned to uncover the location and purpose of the Heart. Take command of a living fleet, altering your starship's DNA in real-time as you grant them new and powerful abilities. The Universal Crusade has just begun!

Ashes of the Singularity is a real-time strategy game set in humanity’s not-so-distant future. What it means to be human has changed with the coming of the singularity. In the post-human economy, sentience is now the most valuable commodity in the universe. The only way to acquire more of that is through the control of Turinium – programmable matter – which can extend consciousness to levels we can't even imagine. Worlds are being transformed into this substance and wars are now being fought across the galaxy for control of those worlds. Each conflict takes place across an entire world. It isn't a skirmish. It's a war. Thousands of units are constantly constructed and sent across the planet with the player directing entire armies, in real time, to capture key resources in an effort to gain total control of the planet.

Galcon is a real time strategy video game developed by Phil Hassey. It is set in space and involves maneuvering fleets of ships to capture enemy planets.

Set in the 24th century, a group of unsuspecting colonies are attacked by a swarm of aliens who want to preserve their race. Now it's up to you to save the colonists and stop the aliens from taking over the planet. Enemy Infestation is a squad-based RTS similar to games like Gender Wars and Commandos. The game is seen from an isometric view similar to Diablo and Crusader. Game missions range from killing off all the aliens, saving colonists and alot more. Players will have the ability to modify their squads weapons, which range from lasers to missile launchers. The game supports multiplayer up to 4 players on LAN and Internet. It even supports single player co-op.

A free and open-source RTS bringing back the classic Command & Conquer, Red Alert, and Dune series by Westwood Studios, with updated user interface, superb multiplayer mode and balance tweaks.

The second title in the Galaxy Online series by IGG.

A 2007 arcade MMO RTS from Namco.

Beyond All Reason is an open-source, community-driven real-time strategy game built for epic-scale warfare. Featuring a flow economy, fully simulated projectile physics, and massive battles with thousands of units on the battlefield, it pushes the boundaries of the RTS genre. With unmatched scale, intuitive quality-of-life features, and powerful unit control mechanics, BAR strikes the perfect balance between macro and micro-management, delivering a truly next-generation strategy experience.