202 Sci-fi Strategy games your group can play together online, including Nemesis: Lockdown, Gaia Project, and Wasteland 3.
All games: 24
In Nemesis: Lockdown, you're part of a team exploring an alien-infested space base. Craft, hide and fight to make it out of its dark, threat-filled corridors. Fulfill your objective even if it means betraying your allies, but remember - this time, you are not the hunter. You are the PREY.
Gaia Project is the digital adaptation of the boardgame Gaia Project created by Helge Ostertag and Jens Drögemüller and published by "Feuerland Verlag". It is a 1-4 player strategy game. It plays in the same universe as Terra Mystica and continues the adventure in the far future.
Following the critically acclaimed 2014 Game of the Year winner Wasteland 2, the RPG series that pioneered the post-apocalyptic genre in video games returns with Wasteland 3.
Sequel to the best-seller The Red Solstice. Plan your strategy and infiltrate a real-time tactical battlefield - alone or with up to 7 squad members. Can you demonstrate the combat prowess to survive and secure a future for humanity?
Make Mars your own! Take control of the world’s most sophisticated AI (AMI) and terraform the surface of the Red Planet for a city-building experience on a planetary scale. Transform this barren world into a lush paradise and explore the surface for any ancient secrets that may be waiting.
Build and explore in a true space sandbox survival adventure. Construct mighty capital vessels, sprawling planetary settlements, and vast space stations in your galactic journey to discover the mysteries of Empyrion!
A classic real-time strategy game with an epic single player campaign, multiplayer & coop, set in the alternate reality of 1920+
The STAR WARS™ Battlefront™ Ultimate Edition includes the STAR WARS™ Battlefront™ Deluxe Edition as well as the STAR WARS™ Battlefront™ Season Pass.
An open-ended factory management game with RTS and tower defense elements.
Welcome to Mythgard, a fantasy cyberpunk CCG of heroes, gods, and mythical beasts. Master the unique lane and mana systems in your rise to the top or enjoy team play with a friend. New players can use the code WelcomeChallenger to get 20 free packs and more to start their journey.
An RTS classic updated in 2026 for modern systems. Welcome to Hell, soldier, and mind the radioactive dust. Join one of two groups battling tooth, claw, tentacle, and any other appendage for survival in this post-nuclear real-time strategy game.
Updated in 2026 for modern systems, Krush Kill 'N Destroy 2: Krossfire is a fast and furious post-apocalyptic real-time strategy game where you have to be quick or be dead. Play as one of three unique factions in the struggle to seek out and conquer oil fields to fuel your army.
Earth is burning. The Reapers have taken over and other civilizations are falling like dominoes. Lead the final fight to save humanity and take back Earth from these terrifying machines, Commander Shepard.
In the late 21st century, the world's civilizations are wiped out by a series of nuclear strikes, seemingly caused by a massive malfunction of the new NASDA (North American Strategic Defense Agency) strategic defense system.
Strategy co-op online multiplayer game about living on a spaceship with your roommates. You'll need to generate resources, take care of a deadly alien infestation, upgrade your appliances and build your sustainable space home. Living together is never easy, especially when you are in outer space!
A tactical roguelike RPG inspired by our favorite tabletop games that lets you create any ability, item, villain, hero, and game imaginable.
The most devious and acclaimed artificial intelligence in strategy gaming is better than ever. A grand strategy/RTS hybrid that reverses many conventions of both genres. Take territory without attracting attention, build your empire with care, and adapt to an ever-evolving galactic battleground.
Andromeda is a hybrid between a Space 4X and an MMO. An online universe sandbox with 2 galaxies full of planets to colonize. Build structures like Mines to generate resources to build ships and engage in fleet battles with NPCs and other players, or just sit and chat with the friendly community.
Age of Wonders: Planetfall is the new strategy game from Triumph Studios, creators of the critically acclaimed Age of Wonders series, bringing all the exciting tactical turn-based combat and in-depth empire building of its predecessors to space in an all-new, sci-fi setting.
An online co-op horror game where you pacify, weaken and capture supernatural creatures for PAH Inc. Each level has a different story, unique monsters, and multiple endings. Play single player or together with up to 6 friends. Includes proximity voice chat with fun effects.
Assemble your robot squad, construct their AI and send them in the battle arena to see your strategy play out. Iterate, improve and repeat until you outsmart all your opponents and friends online.
Battlefleet Gothic: Armada 2 is the new real-time strategy game adapted from Games Workshop’s famous tabletop game that portrays the epic space battles of the Warhammer 40,000 universe.
A unique space strategy game where thousands of players participate in one shared galaxy.
Sign up to be a galaxy trucker today! An adaptation of Vlaada Chvátil’s award-winning board game is now on Steam. Already includes the ALIEN TECHNOLOGIES expansion!