Games like Sins of a Solar Empire II
by Ironclad Games Corporation, Stardock Entertainment
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.
View on Steam · $49.99 →
Ranked by how similar the games actually are, not by sales. Released and Price are remembered for next time.
Closest matches
$59.99Homeworld 3
May 13 · Blackbird Interactive
Both: Space · RTS · Sci-fi
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.
SpaceRTSStrategySci-fiStory RichSingleplayerMultiplayerTacticalCo-opRoguelike👍 5,438
$39.99Galactic Civilizations IV
Oct 19 · Stardock Entertainment
Both: Space · 4X · Sci-fi
Take command of a civilization that has just achieved faster-than-light travel in Galactic Civilizations IV, the newest entry in the award-winning space 4X strategy game series. Explore the galaxy, colonize worlds, shape cultures, make alliances, fight wars and pioneer new technologies.
SpaceGrand StrategySimulation4XStrategySci-fiExplorationSandboxMultiplayerTurn-Based Strategy👍 2,210
$29.99Star Trek: Infinite
Oct 12 · Nimble Giant Entertainment
Both: 4X · Space · RTS
Star Trek: Infinite is a grand strategy experience that lets you play your own Star Trek story as the leader of one of four major factions in the galaxy. Follow the specially crafted story or blaze your own trail in the first Star Trek grand strategy game.
Grand Strategy4XSpaceExplorationSandboxManagementRTSDiplomacyPvEPvP👍 3,031
$24.99Executive Assault 2
Oct 18 · Hesketh Studios Ltd
Both: RTS · Space
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.
RTSBuildingSpace SimStrategyBase BuildingSpaceReal-TimeFPSActionSingleplayer👍 1,604
-60%$15.99ZEPHON
Nov 8 · Proxy Studios
Both: 4X · Tactical · Co-op
From the developers of Warhammer 40,000: Gladius, ZEPHON is a post-apocalyptic 4X strategy game built on Proxy’s unique tactical combat system. Guide survivors through a turbulent future, navigating unexpected disasters, eldritch horror and cyberpunk monstrosities. What will you do to survive?
StrategyTurn-Based4XTacticalMultiplayerLovecraftianSandboxCo-opSci-fiProcedural Generation👍 1,841
-50%$19.99Terra Invicta
Jan 5 · Pavonis Interactive
Both: 4X · Tactical
An alien invasion has fractured humanity into seven ideological factions each with a unique vision for the future. Lead your chosen faction to take control of Earth’s nations, expand across the Solar System, and battle enemy fleets in tactical combat.
StrategyGrand StrategySimulation4XEconomyWarHistoricalTurn-Based StrategyTacticalManagement👍 9,064
FreeImperius
Jun 13 · Incognito Interactive
Both: RTS · Space · Sci-fi
Imperius is an easy-to-learn, hard-to-master space RTS. Command devastating ships of the Imperius Navy and prove your loyalty by destroying everything in your path, no matter the cost.
StrategyRTSSpaceSingleplayerSci-fiFuturisticReal Time TacticsWarLore-RichBase Building
$39.99Xenonauts 2
Apr 2 · Goldhawk Interactive
Both: Sci-fi · Tactical · PvE
Wage a global war of resistance against an alien invasion. Command turn-based tactical battles, build a network of covert bases, directly control your fighter wings, and achieve strategic victory in a simulation of asymmetric warfare against a technologically superior foe.
StrategyRPGTurn-Based TacticsTurn-Based StrategySci-fiTurn-Based CombatTacticalTurn-BasedPvECharacter Customization👍 4,857
$5.99Frontline Crisis
Aug 14 · BCQT
Both: RTS · Space
Defend humanity's last hope, pilot a powerful mech, in Frontlines Crisis! A battlefield swarming with insects makes strategic and combat decisions crucial. Each decision will determine your fate. Defend humanity's last sanctuary, fight fiercely, and uphold human honor with wits and courage!
Tower DefenseTop-Down ShooterRTSStrategyPixel GraphicsSpaceMechsLocal Co-OpAction RTS1980s👍 348
$29.99Starship Troopers: Extermination
Oct 10 · Offworld
Both: Sci-fi · Co-op · PvE
Starship Troopers: Extermination is an up to 16-player co-op FPS that puts you on the far-off frontlines of an all-out battle against the Bugs! Squad up, grab your rifle, and do your part as an elite Deep Space Vanguard Trooper to take back planets from the Arachnid threat!
Online Co-OpActionFPSSci-fiFirst-PersonCo-opMultiplayerCombatAliensPvE👍 29,725
-40%$10.49Tower Dominion
May 7 · Parallel 45 Games
Both: RTS · Tactical
Build and design the terrain while defending your stronghold against alien invasion in this unique Roguelike tower defense. Choose from 30 heroes, survive enemy waves, and upgrade a variety of destructive towers to hold the line!
Tower DefenseStrategyBase BuildingRoguelikeRTSTacticalRogueliteChoices MatterProcedural GenerationResource Management👍 5,124
$59.99Warhammer 40,000: Space Marine 2
Sep 9 · Saber Interactive
Both: Co-op · PvE · Sci-fi
Embody the superhuman skill and brutality of a Space Marine. Unleash deadly abilities and devastating weaponry to obliterate the relentless Tyranid swarms. Defend the Imperium in spectacular third-person action in solo or multiplayer modes.
Co-opActionMultiplayerThird-Person ShooterPvEAdventureThird PersonAction-AdventureSci-fiSingleplayer👍 168,817
-40%$11.99Jump Space
Sep 19 · Keepsake Games
Both: Co-op · PvE · Space
Jump Space (formerly Jump Ship) is a mission based co-op PvE for 1-4 players, where you are the crew of a spaceship. Transition seamlessly from crewing the ship to on-foot exploration and space walks. Explore, upgrade, and survive intense encounters in deep space together.
Co-opPvESpaceFPSSci-fiRogueliteActionFirst-PersonExplorationShooter👍 10,798
-50%$24.99ENDLESS Legend™ 2
4 days ago · AMPLITUDE Studios
Both: 4X · Tactical
Lead your people to victory on an ever-evolving world in this strategy game featuring asymmetric factions led by powerful heroes. Build your empire, wield political influence, and raise grand armies to wage war in a race to uncover dark secrets buried within the planet.
StrategySimulationGrand Strategy4XTurn-Based StrategyMultiplayerHistoricalWarTacticalManagement👍 2,699
$19.99Lord of Rigel
Aug 25 · Rhombus Studios
Both: Space · 4X · Sci-fi
Lord of Rigel is a turn-based 4X space strategy game inspired by the classics. In a galaxy divided by two elder races, will you unite with other species or forge your own path? Navigate galactic politics and defeat threats using espionage, research, and military force. How will you shape the galaxy?
MilitarySpaceGrand StrategyStrategy4XSci-fiSimulationExplorationTurn-Based StrategySandbox👍 113
$14.99Mechabellum
Sep 26 · Game River
Both: Tactical · RTS
Command massive armies in this epic mech auto-battler. Draft your troops, customize your units, master your formations, and crush enemies in spectacular 3D battles. All strategy, no clickfest. Outsmart opponents in 1v1, 2v2, free-for-all, or Survival Mode.
StrategyAuto BattlerMechsRobotsWargameTacticalPvPMultiplayerRTSTurn-Based Strategy👍 17,866
$29.99Revival: Recolonization
Apr 11 · HeroCraft PC
Both: 4X · Tactical · Sci-fi
Set in a post-apoc version of Earth, Revival is a 4x strategy game where the world and its rules can change at key moments, creating a deep and highly replayable experience.
4XGrand StrategyTurn-Based StrategyHex GridStrategyFuturisticEconomyTurn-BasedTacticalSci-fi👍 335
$39.99Empire of the Ants
Nov 6 · Tower Five
Both: PvE · RTS
Conquer enemy nests and lead your colony through the perils of the forest in this groundbreaking RTS. Empire of the Ants is a photorealistic, third-person real-time strategy game where you command your insect legions in epic battles.
WargameReal Time TacticsSandboxPvEPvPRTSGrand StrategyStrategyThird Person3D👍 931
$29.99Songs of Silence
Nov 13 · Chimera Entertainment
Both: 4X · Tactical
Lead armies, rebuild fallen kingdoms, and rise to greatness! Embark on an epic journey of strategy in a visually stunning world. Fight intense battles and uncover a captivating story.
StrategyRPGTurn-Based StrategyStrategy RPG4XAuto BattlerTurn-Based TacticsHand-drawnFantasyTactical👍 2,369
-29%$4.96OpenFront
4 days ago · OpenFront Inc, Evan Pellegrini
Both: Tactical · Co-op · RTS
A massively multiplayer real-time strategy game pitting hundreds of players against one another. Over one million nuke each other every month.
StrategyMultiplayerSingleplayerWarTacticalWargameCo-opPvPIndieRTS👍 379
$19.999-Bit Armies: A Bit Too Far
Aug 26 · Petroglyph
Both: RTS · Tactical
Unleash voxel warfare in 9-Bit Armies: A Bit Too Far. Lead a modern military, build bases, unlock units, and attack in all-out war. Engage on land, sea and air in over two dozen missions, online skirmishes, or co-op. Easy to learn, a challenge to master.
Action RTSRTSWargameReal Time TacticsSandboxColorfulPvPBase BuildingStrategyTactical👍 945
-90%$1.99Hexarchy
Oct 19 · Main Tank Software
Both: 4X · Co-op
Hexarchy is an innovative, fast-paced, historical 4x strategy game where you use cards and deckbuilding to make your decisions. Single-player and online multiplayer.
4XDeckbuildingTurn-Based StrategyTurn-Based TacticsStrategyWarSimulationCo-opPvPMultiplayer👍 1,231
$29.99Songs of Conquest
May 20 · Lavapotion
Both: Tactical · 4X
Raise mighty armies, wield ancient magic and forge an empire. This turn-based strategy adventure game fuses strategic decision making, tactical combat and kingdom management.
Local MultiplayerTurn-Based TacticsTactical4XTurn-Based StrategyTurn-Based CombatFantasyStrategy RPGPixel GraphicsStrategy👍 12,131
$39.99MENACE
Feb 5 · Overhype Studios
Both: Sci-fi · Tactical · PvE
Lead a strike force against an alien threat in this turn-based tactical RPG from the developers of Battle Brothers. Answer distress calls across different worlds, train and equip infantry, deploy tanks and mechs, and plan and execute missions in detailed turn-based battles.
StrategyRPGTurn-Based TacticsTurn-Based StrategySci-fiTurn-Based CombatTacticalTurn-BasedPvECharacter Customization👍 12,304
Also worth a look
Share some of the same DNA, but further from the original.
FreeStormgate
Aug 5 · Frost Giant Studios
Both: RTS
Stormgate is a free-to-play real-time strategy game with a full single-player campaign, 3-player co-op, and PvP versus modes on over 60 maps. Our Editor is also freely available for you to craft just about any custom game mode you can imagine. Join our development journey today!
RTSBase BuildingStrategyMultiplayerWareSportsFree to PlayFuturisticTop-DownBuilding👍 2,104
$14.99Nexus 5X
Apr 18 · Whatboy Games
Both: Co-op · 4X
eXplore, eXpand, eXploit, eXterminate, EXPRESS. All of the depth, diplomacy, conflict and conquest of a turn-based 4X epic but played in fast-paced 60-minute competitive sessions. Play Solo or Multiplayer for 2-8 players.
Board GameStrategyTabletopCo-opMultiplayerTeam-BasedTurn-Based TacticsTurn-Based Strategy4XTurn-Based Combat👍 884
$24.99Starcom: Unknown Space
Sep 2 · Wx3 Labs, LLC
Both: Space · Sci-fi
Starcom: Unknown Space is an action RPG of space exploration and adventure. Build your own starship while discovering an epic story in a universe of strange mysteries, alien factions and uncharted worlds.
SpaceExplorationOpen WorldSpace SimAction RPGTop-Down ShooterSci-fiStory RichIndieRPG👍 4,465
$19.99Yield! Fall of Rome
Aug 11 · Billionworlds
Both: 4X · Co-op
Forge your Kingdom amidst the Ruins of Rome in this turn-based 4X strategy game! As the world crumbles, rebuild civilization and shape your people’s destiny. Unleash your strategic prowess, conquer provinces, and crush all who stand in your way.
Turn-Based CombatTurn-Based StrategyStrategy4XCity BuilderBuildingTurn-Based TacticsMultiplayerCo-opProcedural Generation👍 219
-80%$11.99Warhammer Age of Sigmar: Realms of Ruin
Nov 17 · Frontier Developments
Both: RTS
Wage a campaign of brutal conquest in this realm-shattering real-time strategy game set in the Warhammer Age of Sigmar universe. Become a warlord and lead four unique factions to conquer the wild and savage Realm of Ghur in tense and tactical battles.
StrategyActionRTSAction RTSReal Time TacticsFantasyWargame3DCinematicStylized👍 1,867
$39.99Terminator: Dark Fate - Defiance
Feb 21 · Slitherine Ltd.
Both: RTS
Terminator: Dark Fate – Defiance is not just a game; it's an adrenaline-fueled journey where your strategic prowess decides the fate of mankind against the machines. After the machines took over, the greatest threats may not come from the machines but rather from other human survivors.
StrategyRTSReal Time TacticsWargame3DAtmosphericArtificial IntelligenceAlternate HistoryDarkConspiracy👍 3,398
$39.99HELLDIVERS™ 2
Feb 8 · Arrowhead Game Studios
Both: PvE · Co-op · Sci-fi
The Galaxy’s Last Line of Offence. Enlist in the Helldivers and join the fight for freedom across a hostile galaxy in a fast, frantic, and ferocious third-person shooter.
Online Co-OpPvEThird-Person ShooterMultiplayerShooterActionCo-opSci-fiExtraction ShooterCapitalism👍 839,048
$19.99Void War
Jun 2 · Tundra
Both: Space
Command an ancient starship and fight your way to the heart of a dying Empire. Fend off attacks from demented cultists, craven space pirates, and xenophobic Imperial soldiers. Discover powerful artifacts and use them to build your ship into a fearsome war engine.
SpaceRoguelitePerma DeathChoices MatterStrategyDifficultReplay ValueRoguelikeResource ManagementReal-Time with Pause👍 3,661
$19.99Creeper World IXE
Dec 12 · Knuckle Cracker
Both: RTS · Space
The unstoppable alien force known as The Creeper has returned, devouring thousands of worlds in its path, and yours is next. Battle against the Creeper fluid in a groundbreaking pixel-level simulation to prove that humanity will rule the galaxy forever!
RTSTower DefenseWargameReal Time TacticsSandboxSpace1980sWarPhysicsStrategy👍 855
$19.99The Last Starship
Feb 3 · Introversion Software
Both: Space · Sci-fi
The Last Starship is a 2D space construction game where you design and upgrade your starship. Choose your path: pirate hunter, miner, engineer, spacebus driver, and more, whilst exploring vibrant star systems. Enjoy a growing sandbox world, with regular free updates. Your cosmic adventure awaits!
StrategySandboxSpaceSimulationSingleplayerBase BuildingSci-fiSpace SimBuildingMining👍 1,625
$49.99Warhammer 40,000: Rogue Trader
Dec 7 · Owlcat Games
Both: Co-op
Made in a close partnership with Games Workshop, Warhammer 40,000: Rogue Trader is a story-rich classical RPG from Owlcat Games, developers of the critically acclaimed game, Pathfinder: Wrath of the Righteous.
RPGChoices MatterCRPGCharacter CustomizationTurn-Based StrategyTurn-Based CombatStrategyTactical RPGCo-opAdventure👍 33,727
-30%$8.39From Glory To Goo
Apr 2 · Stratagem Blue
Both: RTS
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.
Base BuildingRTSTower DefenseReal-Time with PauseAction RTSResource ManagementColony SimCity BuilderStrategySandbox👍 1,796
$44.99Dominions 6 - Rise of the Pantokrator
Jan 17 · Illwinter Game Design
Both: 4X
In Dominions 6 you take control of a powerful being that rules a nation and aspires to godhood. The type of Pretender Gods can vary from magically powerful arch mages to old dragons or an enormous tree. Dominions is a deep 4x turn based strategy game with a very large variety of spells and units.
Strategy4XTurn-Based StrategyAsynchronous MultiplayerGrand StrategyGod GameFantasyWargameHand-drawnAuto Battler👍 1,687
$17.99Angels Fall First
Jul 11 · Strangely Interactive Ltd
Both: Sci-fi · Space · Tactical
From commanding the battle standing on the bridge of your flagship all the way down to tactical infantry firefights - AFF brings together all the combat you ever loved in a rich science fiction setting. Boarding, pilotable capital ships, deep weapon customization and full Bot support included!
ActionFPSIndieMultiplayerSci-fiSpaceSimulationFirst-PersonSingleplayerTactical👍 3,834
$14.99Battle Realms: Zen Edition
Jan 27 · Ed Del Castillo
Both: RTS
Return of the Classic, now remastered! Battle Realms is a fantasy RTS inspired by the stories told in martial- arts movies and oriental mythology. Develop your peasants into a highly trained and deadly efficient clan of warriors who are ready to die with your name on their lips.
StrategyActionRTSClassicMultiplayerFantasyEarly AccessFast-PacedSingleplayerBase Building👍 4,198
-25%$22.49Godsworn
Mar 28 · Thunderoak Interactive
Both: RTS · Co-op
Godsworn is a classic RTS with single-player & co-op focus. Experience an epic fantasy retelling of the Baltic Crusades set in a world inspired by pagan mythology. Choose a divine hero, rally worshippers alongside mythical creatures, and smite the unworthy!
Early AccessRTSMythologyCo-opSingleplayerAction RTSStory RichReal-Time3DBase Building👍 807
$10.99Invasion: Phoenix
May 17 · Millzen Studios
Both: PvE · RTS
Invasion: Phoenix is a passion project by a solo developer and lifelong gamer. An alien empire hellbent on conquering Earth has arrived at our doorstep, and humanity is in total anarchy. Delve into this meticulously crafted 2D top-down pixel art RTS and sign up to reclaim Earth... or crush it!
Early AccessAction RTSWargamePvEStrategyRTSArcade2DTop-DownAction
$14.99IDUN - Frontline Survival
Jan 20 · IDUN Interactive
Both: RTS · Sci-fi
A defense RTS where you can move turrets at will. Extract resources, upgrade technology, and defend against enemy swarms in a gripping space campaign. Hold the line, set up your turrets, and brace for screen-filling hordes!
3DBuildingWargameTower DefenseStrategyRTSSurvivalBase BuildingMiningSci-fi👍 685
$9.99STAR FLEET II - Krellan Commander Version 2.0
Nov 13 · Trevor Sorensen, Mark Baldwin
Both: Sci-fi
Welcome to the future of space warfare! Star Fleet II: Krellan Commander puts you in command of an advanced space battlecruiser and tasks you with exploring sectors, fighting and boarding enemy ships, and invading planets. Manage your ship, crew and escorts effectively and find your way to victory!
SimulationStrategyExplorationSpace SimImmersive Sim2DMinimalistText-BasedSci-fiSingleplayer
$29.99Between the Stars
Mar 7 · Isolated Games
Both: Space · Sci-fi
Become the Captain of an interstellar cruiser and journey across the galaxy to save the Republic. During your journey you will have to make important decisions, improve the weaponry of your ship and fight against numerous enemies.
SpaceRPGActionSimulationIndieStrategyAdventureSpace SimSingleplayerSci-fi👍 1,965
$19.99SpaceBourne 2
Nov 18 · Burak Dabak
Both: Space
Embark on a journey to greatness. Get ready for adrenaline-fueled battles and a chance to claim your place in the galaxy. Grab the controls of your ship, gear up for the fight, and unleash your ambition to conquer and build a new empire in the vastness of space.
RPGSpace SimFlightBase Building3DOpen WorldFirst-PersonThird PersonLore-RichSpace👍 4,952
$9.99The Anacrusis
Dec 5 · Stray Bombay
Both: PvE · Co-op · Sci-fi
Battle for survival against endless alien hordes with your friends! The Anacrusis is a first-person shooter that dynamically adjusts difficulty to you. Experience intense 1-4 player co-op action or play as the aliens and stop your friends in 1-8 player Versus mode. Full Steam Workshop support!
PvEFPSCo-opPvPShooterAction-AdventureModdableSci-fiSpaceFemale Protagonist👍 617
$7.99Deep Dark Forest
Apr 15 · pixiangames
Both: RTS
You will have to lead the civilization, develop the economy, enhance the technology, stabilize the people and colonize new galaxies; when encountering unknown civilizations, will you hide yourself or communicate with them in a friendly way? In this "dark forest", every decision will be crucial.
SimulationStrategyRTSGrand StrategySpace SimReal Time TacticsWargameExplorationIsometricMilitary
$24.99Chains of Freedom
Apr 15 · Nordcurrent
Both: Tactical · Sci-fi
Embark on a thrilling journey in a high-stakes, turn-based tactics game. Lead an elite squad in a fictional, dystopian Eastern European country as you unravel a conspiracy threatening the state. Navigate intense strategic battles and adapt to ever-evolving challenges to prevail.
StrategyTurn-Based CombatTacticalTurn-Based TacticsSci-fiCombatTurn-Based StrategyCinematicRealisticThird Person👍 520
$29.99Heroes of Science and Fiction
Mar 17 · Oxymoron Games
Both: Tactical · 4X
A turn-based sci-fi strategy that combines exploration and exciting clashes on the battlefield. Take control over several different species, raise powerful armies for your heroes and destroy your opponents! This HoMM-like is set in a scifi universe, with new mechanics on top of the classic formula.
StrategySimulationRPGMultiplayerTurn-Based StrategyGrand StrategyFantasyTacticalWar4X👍 852
$59.99EARTH DEFENSE FORCE 6
Jul 25 · SANDLOT
Both: Sci-fi · PvE · Co-op
Live the future of despair.The year is 2024 AD. The survivors fought against the remaining threats while trying their best to continue their recovery.Three years passed in the year 2027. In a new world without hope, the time has come to once again resist the fate of the Earth.
ActionThird-Person ShooterShooterOnline Co-OpSci-fi3DPvESingleplayerMultiplayerCo-op👍 6,230



