Games Like Grey Goo

A ground-based RTS prequel to the classic Homeworld games. Assemble your fleet and lead them to victory on the shifting sands of Kharak in this compelling strategy game for PC from Blackbird Interactive.

Why similar: RTS 50.3%, Strategy 17.3%, Sci-fi 13.4%, Great Soundtrack 8.1%, Multiplayer 6%

Why You'll Like It: This game provides a grounded, tactical RTS experience with a strong narrative and excellent sci-fi atmosphere.

The last days of man are at hand.. Two years after the Infinite War the once great warring nations now lie in ruins, and humanity’s hope for a brighter future is nothing but a bitter memory. A new, seemingly unstoppable enemy, supported by the zealots of The Order, now seeks to eradicate mankind: UEF, Aeon Loyalist, and Cybran alike.

Why similar: RTS 50.4%, Strategy 16.3%, Sci-fi 10.3%, Base Building 7.4%, Multiplayer 6.4%

Why You'll Like It: It is the definitive experience for players who enjoy the massive scale and strategic depth found in Grey Goo.

Command distinct factions in a desperate struggle for power and resources in Tempest Rising - a classic RTS set on Earth after a nuclear war.

Why similar: RTS 65.6%, Strategy 18.4%, Base Building 7.8%, Multiplayer 3.5%, Great Soundtrack 2.4%

Why You'll Like It: A modern homage to classic RTS titles that captures the same strategic intensity and base-building focus.

The year is 2047. A massive nuclear fireball explodes high in the night sky, marking the dramatic beginning of the Third Tiberium War and the long-awaited return of the most groundbreaking Real-Time Strategy franchise of all time

Why similar: RTS 44%, Strategy 15.1%, Base Building 13.3%, Sci-fi 8.8%, Multiplayer 8.6%

Why You'll Like It: It offers the closest experience to Grey Goo's traditional base-building and distinct faction-based RTS gameplay.

Wage war across entire solar systems with massive armies at your command. Annihilate enemy forces with world-shattering TITAN-class units, and demolish planets with massive super weapons!

Why similar: RTS 41.5%, Strategy 11.3%, Base Building 10.2%, Sci-fi 8.9%, Mechs 8.5% ★

Why You'll Like It: Captures the epic, large-scale warfare and focus on massive unit production seen in the seed game.

A classic real-time strategy game with an epic single player campaign, multiplayer & coop, set in the alternate reality of 1920+

Why similar: RTS 45.7%, Mechs 15.2% ★, Base Building 12.3%, Strategy 12.2%, Multiplayer 5.6%

Why You'll Like It: Features tactical mech combat and base-building mechanics that feel very similar to the unit interactions in Grey Goo.

Act of Aggression – Reboot Edition brings the techno-thriller RTS game Act of Aggression to a higher level. The Reboot Edition offers a full gameplay overhaul in skirmish mode against the AI and in your multiplayer battles.

Why similar: RTS 60.5%, Strategy 18.1%, Base Building 12.7%, Multiplayer 7.4%, Singleplayer 0.7%

Why You'll Like It: A modern RTS that mirrors the classic resource management and base-building loops that Grey Goo fans love.

What began as a conflict over the transfer of consciousness from flesh to machines escalated into a war which has decimated a million worlds. The Core and the Arm have all but exhausted the resources of a galaxy in their struggle for domination.

Why similar: RTS 50.5%, Strategy 14.9%, Great Soundtrack 11.3%, Sci-fi 8.9%, Robots 5.8%

Why You'll Like It: The foundational classic that established many of the mechanics and the sense of scale present in Grey Goo.

A massive-scale real-time strategy game where you command entire armies on a dynamic battlefield. Conquer multiple worlds across several single-player campaigns; or play with your friends in multiplayer combat.

Why similar: RTS 44.4%, Base Building 15%, Strategy 11.8%, Sci-fi 11.2%, Robots 8.7%

Why You'll Like It: Focuses on massive scale and strategic resource control, perfect for those who enjoyed the scale of Grey Goo.

Includes 47 Steam achievements, leaderboards, and stats!

Why similar: RTS 46.5%, Strategy 17.6%, Sci-fi 9.3%, Base Building 8.9%, Robots 6.7%

Why You'll Like It: An accessible, large-scale RTS that shares the sci-fi aesthetic and base-building focus of the seed game.

Experience the epic space strategy games that redefined the RTS genre. Control your fleet and build an armada across more than 30 single-player missions. Choose unit types, fleet formations and flight tactics for each strategic situation.

Why similar: RTS 48.3%, Strategy 15.4%, Sci-fi 13.4%, Great Soundtrack 11.6%, Space 5.5%

Why You'll Like It: A masterful sci-fi RTS that emphasizes tactical fleet management and positioning.

Lead the Mobile Infantry in this RTS game set in the Starship Troopers film universe. Balance your army composition with a diverse set of unit types, overcome line-of-sight and line-of-fire challenges through tactical positioning, and use special abilities to smash the Arachnid hordes!

Why similar: RTS 56.1%, Strategy 21.1%, Sci-fi 9.7%, Aliens 5.6%, Great Soundtrack 3.5%

Why You'll Like It: Focuses on tactical positioning and managing large forces against overwhelming alien swarms.

Halo Wars: Definitive Edition is an enhanced version of the real-time strategy classic, Halo Wars, updated to run natively on PC. Halo Wars: Definitive Edition includes improved graphics, new achievements and all of the DLC created for the landmark real-time strategy game.

Why similar: RTS 48.5%, Strategy 15.2%, Base Building 13.1%, Sci-fi 7.6%, Multiplayer 5.5%

Why You'll Like It: Offers streamlined base-building and tactical combat within a polished sci-fi setting.

A 4X real-time strategy game from the developers of the critically acclaimed Northgard. Set in Frank Herbert’s groundbreaking Dune universe, you must lead your faction and battle for control and dominance over the harsh desert planet of Arrakis.

Why similar: RTS 43.5%, Sci-fi 18.8%, Base Building 13.6%, Strategy 12.8%, Multiplayer 8.9%

Why You'll Like It: Combines resource management with tactical RTS elements in a harsh, unforgiving environment.

Battle for galactic dominance in this real-time 4X strategy game with unrivaled scale! You’ll explore, expand, exploit, and exterminate through military force, diplomacy, trade, culture, influence, and other underhanded tactics.

Why similar: RTS 43.7%, Strategy 15.9%, Sci-fi 12.6%, Base Building 8%, Multiplayer 8%

Why You'll Like It: Expands the RTS experience to a galactic level while maintaining deep strategic roots.

With 100+ truly unique units, Zero-K is an RTS of freedom and creativity, tempered by a decade of refinement. Sculpt land into a castle and throw invaders off it with a Jugglenaut. Explore a massive campaign, solo or co-op. Hop online for epic 32 player battles or fast paced 1v1, on 100s of maps.

Why similar: RTS 55.9%, Strategy 18.9%, Multiplayer 8.6%, Robots 5.1%, Sci-fi 4.6%

Why You'll Like It: A highly strategic, physics-based RTS that rewards creative base building and terrain usage.

The RTS/FPS phenomenon has moved into space! Build your base on an asteroid, command fleets of starships for epic battles, pilot fighters, mine and trade resources, assemble robots to defend or assault other stations. Take sole command or share the glory as you fight for control of the quadrant.

Why similar: RTS 45.3%, Base Building 13.1%, Strategy 11.6%, Sci-fi 8.6%, Robots 6.9%

Why You'll Like It: Blends traditional base-building with direct control in a unique sci-fi setting.

Customize your unique faction in a new take on real-time strategy as you fight in a variety of skirmish, solo, and multiplayer battles. You are not only a commander, but also an engineer – so you have ultimate control over your faction’s units, factories, superweapons and economy.

Why similar: RTS 71.6%, Strategy 21.1%, Multiplayer 6.3%, Singleplayer 0.7%, Indie 0.3%

Why You'll Like It: Allows for custom unit design, echoing the modular and experimental feel of sci-fi RTS games.

The desperate leadership of a doomed Soviet Union travels back in time to change history and restore the glory of Mother Russia.

Why similar: RTS 46.9%, Strategy 16.1%, Base Building 15.3%, Multiplayer 9.7%, Sci-fi 5%

Why You'll Like It: A classic base-building RTS featuring distinct, powerful factions and high-energy combat.

After the destruction of the EARTH in 2150, the leaders of the Eurasian Dynasty escaped on board an evacuation fleet. Now they are fighting for the survival of the human species. Their base is one large building comprising of smaller variable parts.

Why similar: RTS 51.2%, Base Building 18.4%, Strategy 14.8%, Real-Time 5.2% ★, Space 4.5%

Why You'll Like It: Features deep base-building and modular unit design that appeals to fans of technical RTS games.

Perimeter is an innovative Real-Time-Strategy game that pits players against each other or AI opponents in a life and death struggle to seize territory and establish crucial protective “perimeters.” Players will be introduced to the game’s unique terraforming feature, allowing them to move, build, construct and destroy the map...

Why similar: RTS 58.2%, Strategy 31.4%, Sci-fi 8.7%, Space 1.7%

Why You'll Like It: Unique terrain-manipulation mechanics that echo the strategic depth and unconventional gameplay of Grey Goo.

8-Bit Invaders! is a fast-paced, retro Real-Time Strategy game for the PC. Control the military might of the Galactic Marine Corps or Invade with the devastating power of the Cranioids! Mine, Build, and Fight your way to victory! Conquering the Multiverse was never so easy.

Why similar: RTS 43.2%, Strategy 17%, Aliens 11.5%, Great Soundtrack 11%, Sci-fi 8.1%

Why You'll Like It: A more accessible, fast-paced take on the classic RTS formula for quick play sessions.

Great strategy is timeless. Build, adapt, and defend across dynamic maps, solo or online - every session brings new strategies, new solutions, and new surprises. Now is the perfect time to enter the grid.

Why similar: RTS 36.2%, Aliens 15.7%, Base Building 12.9%, Sci-fi 12.5%, Strategy 11.4%

Why You'll Like It: While primarily tower defense, it shares the base-building and defensive strategy elements found in Grey Goo.

Cossacks 3 is the return of RTS classics. Obtain resources, build cities and research technologies while taking command of great armies, crushing enemies in grand historical warfares on land and sea!

Why similar: RTS 51.8%, Strategy 21.2%, Base Building 14.9%, Multiplayer 10.2%, Singleplayer 1.6%

Why You'll Like It: Provides massive army management and base development similar to traditional RTS design.

Real-time strategy battles in amazing sci-fi worlds! Command brave soldiers, mighty mechas and powerful aliens to face the greatest challenges in hostile alien worlds. The galaxy needs you!

Why similar: RTS 51%, Aliens 15.3%, Sci-fi 14.8%, Strategy 14.4%, Space 2.4%

Why You'll Like It: A more compact, action-oriented RTS that retains the sci-fi themes of the seed game.

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 and the survival of your ship and its crew.

Why similar: RTS 53.9%, Strategy 25.6%, Sci-fi 13.2%, Space 6%, Singleplayer 1.3%

Why You'll Like It: A sci-fi RTS with a strong emphasis on story and tactical fleet combat.

Unique mix of Action, RTS and RPG gameplay elements that forms an innovative game genre. You can build base, manage troops, and then come down to keep your enemy at gunpoint in the dynamic battle and customize your main characters.

Why similar: RTS 54.1%, Strategy 19.6%, Sci-fi 11.8%, Mechs 10% ★, Multiplayer 3.7%

Why You'll Like It: Combines RTS base-building with action-RPG elements for a unique hybrid experience.

From Glory To Goo is a Sci-Fi survival RTS set on an alien world. Serve as humanity's bulwark by establishing a colony and supporting your colonists still in orbit. But beware, for The Goo, a relentless and shape-shifting force approaches from all sides, even above and below.

Why similar: RTS 61.7%, Base Building 22.8%, Strategy 15.4%

This is a fun yet challenging RTS game. To survive in the vast galaxy, you need to build up your own fleet and customize your warships. You will also learn to control them efficiently in battle to defeat your enemies, conquer planets, and expand your galactic empire!

Why similar: RTS 52%, Strategy 27.4%, Sci-fi 14.4%, Space 5.9%, Indie 0.3%

Why You'll Like It: Focuses on tactical space combat with a distinct sci-fi aesthetic.

Executive Assault is an indie real-time strategy/first-person shooter where you can not only build your base and create armies, but also take control of your units and fight as one of them.

Why similar: RTS 48.8%, Strategy 16.6%, Base Building 9.7%, Sci-fi 8.4%, Robots 8%

On the cosmic frontier, humanity has fought alien species for a century. As traditional defenses fall to new-gen alien mechs, tech giant ShellMobile—human-centered at its core—kindles new hope via breakthroughs in extraterrestrial titanium ore research.

Why similar: RTS 37.4%, Mechs 21.2% ★, Strategy 15.7%, Base Building 14.3%, Sci-fi 9.6%

An RTS base builder with huge battles, constant production, and autonomous ships. The Spance approaches, a vast and mysterious storm at the edge of humanity. Who shall claim its riches? Brave the perils of the depths in a story-rich singleplayer campaign with numerous distinct factions and bosses.

Why similar: RTS 45.5%, Base Building 17.6%, Strategy 11.1%, Sci-fi 10.9%, Robots 9.2%

For a thousand years, three opposing forces have waged war for what they believe is true. There can be no room for compromise: their way is the only way. Dubbed The Infinite War, this devastating conflict has taken its toll on a once-peaceful galaxy and has only served to deepen the hatred between the factions.

Why similar: RTS 51.4%, Strategy 18.4%, Sci-fi 11.3%, Base Building 7.3%, Multiplayer 5.4%

Step into a brutal battle between three warring factions In Dawn of War III you will have no choice but to face your foes when a catastrophic weapon is found on the mysterious world of Acheron.

Why similar: RTS 50.3%, Strategy 16.9%, Sci-fi 11%, Base Building 8.8%, Multiplayer 7.1%

Lead the great armies of the Star Wars™ Episode II: Attack of the Clones saga in intense real-time strategy clashes. Enter the fray as the Galactic Empire, Rebel Alliance, Wookies, Trade Federation, Gungans or Royal Naboo to determine the course of the Galactic Civil War.

Why similar: RTS 53.3%, Strategy 19.6%, Sci-fi 7.9%, Multiplayer 7.7%, Base Building 6.6%

Silica blends FPS and RTS in epic, photorealistic battles. Choose to fight on the ground or command from above as humans or aliens. Dive into thrilling multiplayer combat or master strategic command. Are you ready to survive and conquer?

Why similar: RTS 45.2%, Aliens 16.7%, Strategy 12.7%, Sci-fi 12.5%, Multiplayer 9.9%

Etherium is a real-time strategy game set in a science-fiction universe, where three factions battle it out for a mysterious and rare resource known as ‘Etherium’.

Why similar: RTS 40.2%, Sci-fi 27.8%, Strategy 22.5%, Multiplayer 6.7%, Space 2.4%

Moduwar is an adaptive organic RTS where you control an alien creature, Modu - and your body is your army. Grow new organs, split, merge and mutate them into unique units that adapt to your needs as you fight against human and alien threats in single and multiplayer modes.

Why similar: RTS 36.1%, Aliens 14.8%, Base Building 12.3%, Sci-fi 10.7%, Strategy 10.4%

Tactical, beautiful, and wholly unique, the GOTY-winning sci-fi RTS returns with Homeworld 3. Assume control and battle through fleet combat in dazzling, fully 3D space while the award-winning story unfolds on a galactic scale.

Why similar: RTS 49.7%, Strategy 13.8%, Sci-fi 13.6%, Multiplayer 7.8%, Space 4.6%

A fast paced multiplayer shooter that pits aliens against humans in a strategic and action-packed struggle for survival!

Why similar: RTS 36.4%, Strategy 16.8%, Aliens 14.6%, Multiplayer 13.4%, Sci-fi 12.4%

An epic struggle for control!

Why similar: RTS 47.9%, Strategy 34.6%, Sci-fi 11.1%, Space 6.4%

"You are outgunned. You are massively outnumbered. You must win." These are your orders. Humanity has already fought its war against the machines -- and lost. AI death squads stand watch over every planet and every wormhole, the few remaining human settlements are held captive in orbiting bubbles, and the AIs have turned their...

Why similar: RTS 39.5%, Strategy 37%, Sci-fi 9%, Great Soundtrack 7.5%, Space 3.3%

8-Bit Armies is a retro Real-Time Strategy game. With a colorful, blocky voxel art style, 8-Bit Armies is Petroglyph's most fast-paced, friendly, and accessible RTS game to date. Featuring a campaign of 25 single-player missions, 12 co-op missions, multiplayer and skirmish modes.

Why similar: RTS 51.9%, Strategy 26.1%, Base Building 8.3%, Multiplayer 7.7%, Great Soundtrack 5.2%

The world erupts in conflict as Soviet forces invade American soil in Command & Conquer: Red Alert 2. You are the Supreme Commander. Arm yourself to the teeth with top-secret technologies and lead the Soviet or Allied troops to victory.

Why similar: RTS 53.8%, Strategy 16.7%, Multiplayer 9.4%, Base Building 8.6%, Great Soundtrack 5.5%

Explore war-torn post-apocalyptic landscapes and take fight against enemies using various weapons in this FPS/RTS hybrid.

Why similar: RTS 43.1%, Strategy 18.9%, Sci-fi 12.3%, Base Building 9.8%, Multiplayer 9.2%

Mars has been colonized, and Earth's corporate titans fight to dominate this new market. Competition is fierce in this fast-paced economic RTS from Civilization IV Lead Designer, Soren Johnson.

Why similar: Sci-fi 28.4%, Strategy 25.4%, Base Building 21.6%, Multiplayer 16.5%, Space 5.5%

Build your base, prepare your troops, and face your most epic battle yet in this old-school real-time strategy game. Choose between two factions, test your skills in three epic campaigns and engage in online battles with up to 16 players simultaneously.

Why similar: RTS 49.9%, Base Building 12.7%, Strategy 11.4%, Sci-fi 9.9%, Multiplayer 9.5%

Command & Conquer and Red Alert are both remastered in 4K by the former Westwood Studios team members. Includes all 3 expansions, rebuilt multiplayer, a modernized UI, Map Editor, bonus footage gallery, and over 7 hours of remastered music.

Why similar: RTS 51%, Strategy 16.7%, Base Building 14.8%, Great Soundtrack 10%, Multiplayer 6.7%

AirMech® Strike is a fast paced Action-RTS game that can be played solo, coop, or competitively online. Earn Kudos and Experience in battle and unlock a wide collection of AirMechs and Units while you practice the perfect strategy to emerge victorious!

Why similar: RTS 39.1%, Mechs 20.4% ★, Strategy 14.8%, Multiplayer 10.6%, Robots 7.9%

Command a team of 5 elite soldiers against an alien horde of 100,000. Surrounded on all sides, you must outmaneuver and outsmart the enemy.

Why similar: RTS 49.6%, Strategy 25.1%, Sci-fi 11.6%, Aliens 11.2%, Singleplayer 1.8%

Nomad Fleet is a RTS game where you must lead the last remnants of Mankind to safety after a mysterious alien race has hunted them near extinction. Lead a fully armed fleet of battleships, carriers and fighters through a series of randomized scenarios and encounters where they must fight for their survival while scavenging for resources,...

Why similar: RTS 42.7%, Strategy 29.6%, Sci-fi 16.6%, Space 5.3%, Real-Time 4.1% ★

In this sci-fi turn-based strategy with real-time base-building elements, you’ll be defending human territories against the transhuman Augments. Expand your HQ, and manufacture and upgrade an army of advanced drones to wage interplanetary war for Humanity!

Why similar: Mechs 22.6% ★, Base Building 17.5%, Sci-fi 16.3%, Strategy 16%, Robots 12.6%

Taur is an action-strategy sci-fi game. Control the Prime Cannon and unlock all of its powerful weapons and abilities. Build turrets, droids, aircraft and more as you fight to protect the homeworld of the Tauron droids against a relentless invasion. Will your Taur stand against the Imperion warmachine?

Why similar: RTS 33.3%, Strategy 21.1%, Base Building 17.3%, Sci-fi 13.1%, Robots 9.2%

Experience the celebrated strategy gameplay of Eufloria HD. Conquer asteroids in space and use their resources to grow floral creatures that do your bidding. Expand your empire and fight against several teams of AI opponents that all vie for the same resources and can offer fierce opposition.

Why similar: Strategy 48.1%, RTS 36.9%, Great Soundtrack 12.9%, Singleplayer 1.4%, Indie 0.8%

A four races sci-fi base building real time strategy game set on the dark side of an unknown planet where the valuable "green ice" resource can be found.

Why similar: RTS 54.4%, Strategy 29.7%, Sci-fi 15.3%, Indie 0.6%

Metal Fatigue is a real-time strategy game taking the genre to new heights - literally. Build and customize your massive Combots to dominate the three battlefield levels simultaneously - from orbit, to the surface, and even underground!

Why similar: RTS 46.1%, Strategy 29%, Mechs 15.2% ★, Robots 9.7%

FATAL ERROR is a real-time strategy game on the digital battlefields of a computer world under attack. With your TAC-AID and advanced programming, you must eliminate all threats to the Mainframe and take the fight to the viruses. Discover an abstract world of limitless potential…and lurking dangers.

Why similar: RTS 43.5%, Mechs 15.1% ★, Base Building 13.5%, Strategy 12.2%, Sci-fi 8.4%

It’s 2741 and the universe is at war. The Terran Empire is laying siege to the NSA, a treaty of colonies that upholds freedom and democracy. After losing the battle in space, the NSA is forced to retreat to its last stronghold. Can you snatch victory from impending doom?

Why similar: Strategy 44.9%, RTS 44.2%, Sci-fi 11%