Games like Grey Goo

Still thinking about Grey Goo and its competitive and replayable tone? These games offer a similar pull for your backlog.

From Glory To Goo
A sci-fi survival RTS where you build a colony on a hostile planet while waves of alien Goo close in. Expand, fortify and call down orbital fire from your ship overhead, then hold the line. Captains level up, factions play differently, maps are procedurally generated, and every run dares you to last a little longer.
Replayable, Dark
96% of 1,871 Steam reviews are positivePlayers online now: 115$11.99
Ashes of the Singularity: Escalation
Command thousands of units across entire worlds in a large-scale RTS about economy, territory and timing. Play the campaigns of the Post-Human Coalition and the Substrate, or take friends into ranked and unranked multiplayer. The fleets largely manage themselves, so the real battle is in where you build, what you research and when you strike.
Competitive, Replayable
76% of 2,715 Steam reviews are positivePlayers online now: 288$5.99
Tempest Rising
A classic base-building RTS set on a nuclear-scarred Earth, where two armies fight over the mysterious Tempest vines. Build bases, harvest resources and command huge armies in two full campaigns, or take your skills into ranked 1v1 and 2v2 matches. Fast, hard-hitting and made for anyone who misses the great strategy games of the 2000s.
Competitive, Replayable
86% of 10,171 Steam reviews are positivePlayers online now: 144$39.99
Supreme Commander: Forged Alliance
Supreme Commander: Forged Alliance is a large-scale sci-fi RTS about commanding armies, navies, and air forces across maps up to 81km wide. You build a base from one Commander, grow the economy, and field hundreds of units including experimentals. It rewards long-term planning and remains the benchmark for enormous real-time war.
Competitive, Replayable
96% of 9,986 Steam reviews are positivePlayers online now: 1,097$12.99
ZeroSpace
A sci-fi RTS where humanity's faster than light network is failing, and everyone wants the last of the flux. Build bases, command huge armies, call down orbital weapons, and make story choices as Commander Aster. Or team up with a friend in the co-op Galactic War, where every season brings new missions, events and rewards.
Competitive, Replayable
78% of 1,357 Steam reviews are positivePlayers online now: 77$39.99
SunAge: Battle for Elysium
A return to the roots of real-time strategy, providing beautiful 2D visuals combined with all the features that we came to expect from old school classics. This remastered version is a culmination of all the improvements and new features based upon suggestions from the community.
Competitive, Replayable
71% of 172 Steam reviews are positive$14.99
Nightside
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.
Competitive, Replayable
62% of 97 Steam reviews are positive$4.99
Forged Battalion
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.
Competitive, Replayable
62% of 786 Steam reviews are positive$9.99
Executive Assault
An RTS where you can also be the robot. Build a base, raise an army of tanks and walkers, then jump into any unit and fight from the ground, even inside your own buildings. Win by storming the enemy HQ and taking out their CEO before they take out yours.
Competitive, Replayable
84% of 1,267 Steam reviews are positive$12.99
WAR PARTY
War Party is a strategy game where you enter a prehistoric world of Dinosaurs, Cavemen and Magic! Build up your chosen faction, gather resources, explore the land and command them against enemy tribes and wildlife! Will your story be about Life, Death or Balance? Can you survive?
Competitive, Replayable
66% of 378 Steam reviews are positive$9.99
Space Tales
Space Tales is a sci-fi RTS where you build fortified bases, manage resources, and command retro-futuristic armies. Adapt to deadly alien factions, capture huge monsters and turn them into powerful allies as humanity fights to survive among the stars.
78% of 40 Steam reviews are positive$5.99
Zero-K
Zero-K is a real-time strategy game where physics does the fighting. Sculpt terrain into fortresses, toss battleships onto hilltops with gravity guns, and command 100+ units that dodge, kite and zig-zag on their own. A 70+ mission campaign solo or in co-op, plus online battles from 1v1 up to 16v16.
Competitive, Replayable
93% of 4,448 Steam reviews are positivePlayers online now: 156Free

Hidden gems like Grey Goo

Rogue Command

Command units, call down bases and draft a fresh build after every battle in a fast sci-fi RTS where each run plays out differently.

$19.99

The Scouring

Command an army or fight as one hero, tearing through bases, dungeons and undead nights with friends or rivals.

$17.49

From Glory To Goo

Grow a settlement on a hostile world, wall it in, and answer the Goo with orbital fire before they reach your gates.

$11.99

Annihilate The Spance

Annihilate The Spance is a single-player RTS where your shipyards build endlessly and your ships fight on their own.

$29.99

ZeroSpace

Lead huge armies and orbital strikes in a fast sci-fi war, or join a friend in a co-op campaign that changes every season.

$39.99

Buggos 2

Play the villain, evolve your swarm with wild mutations, and let the horde do the dirty work.

$19.99

9-Bit Armies: A Bit Too Far

Raise a base, mass tanks, ships and planes, and push across land, sea and air in fast, friendly-looking battles that stay easy to start and tricky…

$19.99

Executive Assault 2

Run a space empire from the strategy map, then take direct control of a ship, robot or turret to fight the battle yourself.

$24.99

Tempest Rising

Build bases, command huge armies and outplay rivals in ranked matches on a nuclear-scarred Earth.

$39.99

Buggos

Command a hungry bug hive, evolve it in wild directions and drown human bases in a tide of chittering legs.

$14.99

Terminator: Dark Fate - Defiance

A real-time tactics game in the Terminator: Dark Fate universe.

$39.99

Silica

Battle across the dunes of Baltarus as a soldier, then take command of the whole war from above, alone or with friends.

$24.99

Newest games like Grey Goo

Ashes of the Singularity II

Lead vast armies of humans, machines or post-humans across entire worlds, in solo campaigns or online battles.

$55.99

Silica

Battle across the dunes of Baltarus as a soldier, then take command of the whole war from above, alone or with friends.

$24.99

Space Tales

Space Tales is a sci-fi RTS where you build fortified bases, manage resources, and command retro-futuristic armies.

$5.99

ZeroSpace

Lead huge armies and orbital strikes in a fast sci-fi war, or join a friend in a co-op campaign that changes every season.

$39.99

Rogue Command

Command units, call down bases and draft a fresh build after every battle in a fast sci-fi RTS where each run plays out differently.

$19.99

Dying Breed

Golden-age RTS classic. Fast-paced action & strategic decision-making, battling evil arch-enemies, zombies, and retro-futuristic technologies.

$17.99

Buggos 2

Play the villain, evolve your swarm with wild mutations, and let the horde do the dirty work.

$19.99

The Scouring

Command an army or fight as one hero, tearing through bases, dungeons and undead nights with friends or rivals.

$17.49

Moduwar

Moduwar is an adaptive organic RTS where you control an alien creature, Modu - and your body is your army.

$14.99

Tactical Warfare

The enemy attack on your base is imminent; secure your defenses, mobilize your troops, reinforce key positions, and get ready for the next battle.

$9.99

Tempest Rising

Build bases, command huge armies and outplay rivals in ranked matches on a nuclear-scarred Earth.

$39.99

Annihilate The Spance

Annihilate The Spance is a single-player RTS where your shipyards build endlessly and your ships fight on their own.

$29.99