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The top results based on the latest update are State of Mind [Score: 0.9], Omikron: The Nomad Soul [Score: 0.8] and The Bureau: XCOM Declassified [Score: 0.8] The top rated games you can find here are XCOM: Enemy Unknown [SteamPeek Rating: 9.8] ranked #7, Mass Effect (2007) [SteamPeek Rating: 9.0] ranked #5 and Mass Effect 2 (2010) [SteamPeek Rating: 8.9] ranked #15 Also don't forget to check the newest releases Drone Swarm [Release date: 2020-10-20] ranked #21, Filament [Release date: 2020-04-23] ranked #20 and Interstellar Space: Genesis [Release date: 2019-07-25] ranked #9.

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Sci-fiActionIndieSpaceStory RichStrategySingleplayerAdventurePuzzleThird-Person ShooterShooterRPGMultiplayerAliensRTSGreat SoundtrackCyberpunkTurn-BasedTop-Down ShooterAnimeVisual NovelFuturisticAtmosphericTactical4XPlatformerTurn-Based StrategyDifficultFemale ProtagonistFirst-PersonMMORPGMassively MultiplayerFree to PlayPhysicsCombatReal Time TacticsSpace SimFast-PacedSandboxSimulationTop-DownThird PersonRobotsInteractive FictionSide ScrollerExplorationPolitics
State of Mind screenshotState of Mind screenshotState of Mind screenshotState of Mind screenshotState of Mind screenshotState of Mind screenshotState of Mind screenshotState of Mind screenshotState of Mind screenshot
State of Mind
Sci-fiAdventureStory RichFuturisticSingleplayer

State of Mind

5.4640 146

Release date: 15 Aug, 2018

State of Mind is a futuristic thriller game delving into transhumanism. The game explores themes of separation, disjuncture and reunification, in a world that is torn between a dystopian material reality and a utopian virtual future.

Windows |   Mac |   Linux | Steam Achievements | Full controller support | Steam Trading Cards

Sci-fiAdventureStory RichFuturisticSingleplayerCyberpunkIndieDystopian TranshumanismSexual ContentDarkActionThird PersonRobotsGreat SoundtrackVisual NovelStylizedAtmosphericOpen World

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Omikron: The Nomad Soul screenshotOmikron: The Nomad Soul screenshotOmikron: The Nomad Soul screenshotOmikron: The Nomad Soul screenshotOmikron: The Nomad Soul screenshotOmikron: The Nomad Soul screenshotOmikron: The Nomad Soul screenshotOmikron: The Nomad Soul screenshotOmikron: The Nomad Soul screenshot
Omikron: The Nomad Soul
RPGSci-fiCyberpunkGreat SoundtrackFuturistic

Omikron: The Nomad Soul

3.9185 77

Release date: 26 Sep, 2013

"I have many things to tell you and very little time… I come from a universe parallel to yours. My world is desperately in need of your help. Only YOU can save us."Responding to the desperate pleas of a mysterious character from another dimension, your soul must enter the dark and futuristic city of Omikron.

Windows

RPGSci-fiCyberpunkGreat SoundtrackFuturisticAdventureCult ClassicClassicSoundtrackOpen World1990'sFightingStory RichActionCombatSingleplayerShooterFPSThird PersonFirst-Person

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The Bureau: XCOM Declassified screenshotThe Bureau: XCOM Declassified screenshotThe Bureau: XCOM Declassified screenshotThe Bureau: XCOM Declassified screenshotThe Bureau: XCOM Declassified screenshotThe Bureau: XCOM Declassified screenshotThe Bureau: XCOM Declassified screenshotThe Bureau: XCOM Declassified screenshotThe Bureau: XCOM Declassified screenshot
The Bureau: XCOM Declassified
ActionTacticalSci-fiThird-Person ShooterSingleplayer

The Bureau: XCOM Declassified

5.62854 1426

Release date: 22 Aug, 2013

The year is 1962 and the Cold War has the nation gripped by fear.  A top-secret government unit called The Bureau begins investigating a series of mysterious attacks by an enemy more powerful than communism.

Windows |   Mac | Steam Achievements | Full controller support | Steam Trading Cards

ActionTacticalSci-fiThird-Person ShooterSingleplayerThird PersonAliensStrategyShooterRPGAdventureAtmosphericCold WarStory RichMultiplayerOpen WorldNoirStealthRetroCo-op

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Mass Effect (2007) screenshotMass Effect (2007) screenshotMass Effect (2007) screenshotMass Effect (2007) screenshotMass Effect (2007) screenshotMass Effect (2007) screenshotMass Effect (2007) screenshotMass Effect (2007) screenshotMass Effect (2007) screenshot
Mass Effect (2007)
RPGSci-fiStory RichActionSpace

Mass Effect (2007)

9.012874 802

Release date: 19 Dec, 2008

As Commander Shepard, you lead an elite squad on a heroic, action-packed adventure throughout the galaxy. Discover the imminent danger from an ancient threat and battle the traitorous Saren and his deadly army to save civilization. The fate of all life depends on your actions!

Windows

RPGSci-fiStory RichActionSpaceThird-Person ShooterSingleplayerGreat SoundtrackChoices MatterThird PersonCharacter CustomizationShooterFemale ProtagonistAdventureRomanceAtmosphericOpen WorldReal-Time with PauseAction RPGImmersive

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The Swapper screenshotThe Swapper screenshotThe Swapper screenshotThe Swapper screenshotThe Swapper screenshotThe Swapper screenshotThe Swapper screenshotThe Swapper screenshotThe Swapper screenshot
The Swapper
PuzzleSci-fiAtmosphericIndieSpace

The Swapper

7.94030 261

Release date: 30 May, 2013

What if someone knew your mind better than you did? The Swapper is an award-winning, narrative driven puzzle game set in the furthest reaches of space.

Windows |   Mac |   Linux | Steam Achievements | Full controller support | Steam Trading Cards

PuzzleSci-fiAtmosphericIndieSpacePlatformerPuzzle PlatformerSingleplayerAdventureGreat SoundtrackPhilosophical2DPsychological HorrorMetroidvaniaMysteryExplorationStory RichActionSide ScrollerDifficult

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XCOM: Enemy Unknown screenshotXCOM: Enemy Unknown screenshotXCOM: Enemy Unknown screenshotXCOM: Enemy Unknown screenshotXCOM: Enemy Unknown screenshotXCOM: Enemy Unknown screenshotXCOM: Enemy Unknown screenshotXCOM: Enemy Unknown screenshotXCOM: Enemy Unknown screenshot
XCOM: Enemy Unknown
Turn-Based StrategyTacticalStrategySci-fiTurn-Based

XCOM: Enemy Unknown

9.829346 1722

Release date: 11 Oct, 2012

The XCOM: Enemy Unknown - Slingshot Pack is Now Available!

Windows |   Linux | Steam Achievements | Full controller support | Steam Trading Cards

Turn-Based StrategyTacticalStrategySci-fiTurn-BasedAliensSingleplayerBase BuildingTurn-Based TacticsUnforgivingReplay ValueAddictivePerma DeathMultiplayerCharacter CustomizationDifficultRPGActionAtmosphericFuturistic

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Waking Mars screenshotWaking Mars screenshotWaking Mars screenshotWaking Mars screenshotWaking Mars screenshotWaking Mars screenshotWaking Mars screenshot
Waking Mars
Sci-fiAdventureIndieExplorationPlatformer

Waking Mars

5.7527 64

Release date: 13 Dec, 2012

In 2097, life is discovered on Mars. When your mission of first contact becomes trapped by a cave-in, you must master the alien ecosystem to survive. Soon you stumble upon more than anyone expected, and with time running out, you will make a decision that determines the fate of a lost planet.

Windows |   Mac |   Linux | Steam Achievements | Full controller support

Sci-fiAdventureIndieExplorationPlatformerPuzzleAtmosphericSingleplayerStory RichMetroidvaniaMarsWell-WrittenMultiple EndingsNatureAction2DSide ScrollerSpace

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Interstellar Space: Genesis screenshotInterstellar Space: Genesis screenshotInterstellar Space: Genesis screenshotInterstellar Space: Genesis screenshotInterstellar Space: Genesis screenshotInterstellar Space: Genesis screenshotInterstellar Space: Genesis screenshotInterstellar Space: Genesis screenshotInterstellar Space: Genesis screenshot
Interstellar Space: Genesis
StrategyIndie4XSci-fiSpace

Interstellar Space: Genesis

4.7273 69

Release date: 25 Jul, 2019

Interstellar Space: Genesis is a turn-based space 4X strategy game in which you attempt to build a thriving galactic empire. Discover mysteries among the stars, colonize worlds, and engage enemies in tactical turn-based combat on your journey to becoming the ruler of the galaxy!

Windows

StrategyIndie4XSci-fiSpaceTurn-BasedTurn-Based StrategyGrand StrategyTurn-Based TacticsSingleplayerExplorationSandboxGreat SoundtrackTurn-Based CombatFuturisticRPGWarMilitaryReplay ValueOpen World

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Grey Goo screenshotGrey Goo screenshotGrey Goo screenshotGrey Goo screenshotGrey Goo screenshotGrey Goo screenshotGrey Goo screenshotGrey Goo screenshotGrey Goo screenshot
Grey Goo
StrategyRTSSci-fiMultiplayerAliens

Grey Goo

5.41594 699

Release date: 23 Jan, 2015

Fight for control of a frontier world. Gather resources, build your base, and command your forces in battle. Survive long enough to unleash your ultimate weapon - THE EPIC.

Windows | Steam Achievements | Steam Trading Cards | Steam Workshop | Steam Leaderboards

StrategyRTSSci-fiMultiplayerAliensGreat SoundtrackSingleplayerBase BuildingRobotsMechsFemale ProtagonistSpaceFuturisticCompetitiveIndieOpen WorldActionSandboxReal-Time

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The Fall screenshotThe Fall screenshotThe Fall screenshotThe Fall screenshotThe Fall screenshotThe Fall screenshotThe Fall screenshotThe Fall screenshotThe Fall screenshot
The Fall
AdventureSci-fiIndieAtmosphericPuzzle

The Fall

6.92262 305

Release date: 30 May, 2014

Take the role of ARID, the artificial intelligence within a high-tech combat suit. The Fall is a unique combination of adventure-game puzzle solving and side-scroller action, all set within a dark and atmospheric story. Get ready for a disturbing journey as you explore the world of The Fall.

Windows |   Mac |   Linux | Steam Achievements | Full controller support | Steam Trading Cards

AdventureSci-fiIndieAtmosphericPuzzleSide ScrollerStory RichActionSingleplayerHorrorPoint & ClickFemale ProtagonistRobotsEpisodicDark2DCyberpunkShortKickstarterMetroidvania

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Analogue: A Hate Story screenshotAnalogue: A Hate Story screenshotAnalogue: A Hate Story screenshotAnalogue: A Hate Story screenshotAnalogue: A Hate Story screenshotAnalogue: A Hate Story screenshotAnalogue: A Hate Story screenshotAnalogue: A Hate Story screenshotAnalogue: A Hate Story screenshot
Analogue: A Hate Story
Visual NovelAnimeIndieSci-fiStory Rich

Analogue: A Hate Story

7.01493 79

Release date: 27 Apr, 2012

A dark visual mystery novel featuring transhumanism, traditional marriage, loneliness, and cosplay. Two pursuable characters. Five endings. Welcome to the future.

Windows |   Mac |   Linux | Steam Achievements

Visual NovelAnimeIndieSci-fiStory RichInteractive FictionLGBTQ+SingleplayerHackingGreat SoundtrackMultiple EndingsFemale ProtagonistDating SimMysteryRomanceAdventure2DDarkCuteText-Based

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Homeworld: Deserts of Kharak screenshotHomeworld: Deserts of Kharak screenshotHomeworld: Deserts of Kharak screenshotHomeworld: Deserts of Kharak screenshotHomeworld: Deserts of Kharak screenshotHomeworld: Deserts of Kharak screenshotHomeworld: Deserts of Kharak screenshotHomeworld: Deserts of Kharak screenshotHomeworld: Deserts of Kharak screenshot
Homeworld: Deserts of Kharak
StrategyRTSSci-fiMultiplayerStory Rich

Homeworld: Deserts of Kharak

6.93851 860

Release date: 20 Jan, 2016

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.

Windows |   Mac | Steam Achievements | Steam Trading Cards | Steam Leaderboards

StrategyRTSSci-fiMultiplayerStory RichGreat SoundtrackSpaceFemale ProtagonistAtmosphericSingleplayerActionFuturisticReal-TimeCo-opTacticalAdventureFirst-Person

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Binary Domain screenshotBinary Domain screenshotBinary Domain screenshotBinary Domain screenshotBinary Domain screenshotBinary Domain screenshotBinary Domain screenshotBinary Domain screenshotBinary Domain screenshot
Binary Domain
ActionThird-Person ShooterSci-fiCyberpunkRobots

Binary Domain

6.51822 327

Release date: 26 Apr, 2012

Set in futuristic Tokyo, take control of the robotic community before they control everything!

Windows | Steam Achievements | Full controller support | Steam Leaderboards

ActionThird-Person ShooterSci-fiCyberpunkRobotsShooterStory RichThird PersonTranshumanismSingleplayerFuturisticAdventureCo-opMultiplayerDystopian ControllerVoice ControlAtmosphericRPGGreat Soundtrack

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Mass Effect 2 (2010) screenshotMass Effect 2 (2010) screenshotMass Effect 2 (2010) screenshotMass Effect 2 (2010) screenshotMass Effect 2 (2010) screenshotMass Effect 2 (2010) screenshotMass Effect 2 (2010) screenshotMass Effect 2 (2010) screenshotMass Effect 2 (2010) screenshot
Mass Effect 2 (2010)
RPGSci-fiStory RichThird-Person ShooterAction

Mass Effect 2 (2010)

8.911960 726

Release date: 28 Jan, 2010

Recruit. Explore. Control.Two years after Commander Shepard repelled invading Reapers bent on the destruction of organic life, a mysterious new enemy has emerged. On the fringes of known space, something is silently abducting entire human colonies.

Windows

RPGSci-fiStory RichThird-Person ShooterActionSpaceSingleplayerGreat SoundtrackChoices MatterAdventureCinematicRomanceThird PersonCharacter CustomizationShooterAtmosphericFemale ProtagonistAction RPGReal-Time with PauseClassic

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Halo: Spartan Assault screenshotHalo: Spartan Assault screenshotHalo: Spartan Assault screenshotHalo: Spartan Assault screenshotHalo: Spartan Assault screenshotHalo: Spartan Assault screenshot
Halo: Spartan Assault
ActionTop-Down ShooterSci-fiSingleplayerTop-Down

Halo: Spartan Assault

6.62760 664

Release date: 4 Apr, 2014

Halo: Spartan Assault brings the excitement of Halo combat to Steam for the very first time. Battle your way through 30 action-packed missions against the Covenant as you explore the origin of the Spartan Ops program featured in Halo 4. *DirectX feature level 10 required.

Windows | Steam Achievements | Steam Trading Cards | Steam Leaderboards

ActionTop-Down ShooterSci-fiSingleplayerTop-DownShooterTwin Stick ShooterStrategyTouch-FriendlyArcadeAdventureGreat SoundtrackFuturisticAliensMultiplayerSpaceIsometricThird PersonThird-Person ShooterRTS

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X Rebirth screenshotX Rebirth screenshotX Rebirth screenshotX Rebirth screenshotX Rebirth screenshotX Rebirth screenshotX Rebirth screenshotX Rebirth screenshotX Rebirth screenshot
X Rebirth
SimulationSpaceSci-fiActionSpace Sim

X Rebirth

3.52051 2963

Release date: 15 Nov, 2013

In the distant future, the X universe faces a period of profound and irrevocable change. While the universe stumbles towards an uncertain future, countless adventures await as new enemies rise in search of power.

Windows |   Mac |   Linux | Steam Achievements | Full controller support | Steam Trading Cards | Steam Workshop

SimulationSpaceSci-fiActionSpace SimSandboxSingleplayerOpen WorldEconomyTradingStrategyAtmosphericModdableExplorationAdventureGreat SoundtrackManagement

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Vanquish screenshotVanquish screenshotVanquish screenshotVanquish screenshotVanquish screenshotVanquish screenshotVanquish screenshotVanquish screenshotVanquish screenshot
Vanquish
ActionThird-Person ShooterSci-fiSingleplayerFast-Paced

Vanquish

7.43585 444

Release date: 25 May, 2017

PlatinumGames’ revolutionary sci-fi action shooter slide-boosts onto PC. Battle legions of future-tech enemies using a vast arsenal of weapons, including all DLC. Fully unlocked framerate and gorgeous HD resolutions up to 4K. The definitive way to play: war has accelerated.

Windows | Steam Achievements | Full controller support | Steam Trading Cards

ActionThird-Person ShooterSci-fiSingleplayerFast-PacedShooterThird PersonBullet TimeFuturisticMechsRobotsArcadeCharacter Action GameGreat SoundtrackAdventureHack and SlashClassicCyberpunkStory RichDifficult

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Halo: Spartan Strike
ActionSci-fiTop-Down ShooterSingleplayerAliens

Halo: Spartan Strike

5.6739 160

Release date: 16 Apr, 2015

Halo: Spartan Strike makes you a Spartan supersoldier battling evil forces. Delve into 30 challenging missions through cities and jungles using a devastating arsenal of weapons, abilities and vehicles including the iconic Warthog against the Covenant and Promethean enemies.

Windows | Steam Achievements | Steam Leaderboards

ActionSci-fiTop-Down ShooterSingleplayerAliensShooterStrategyMultiplayerGreat SoundtrackTwin Stick ShooterAdventureCo-opFuturisticThird PersonTop-DownIsometricTouch-Friendly

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Filament screenshotFilament screenshotFilament screenshotFilament screenshotFilament screenshotFilament screenshotFilament screenshotFilament screenshotFilament screenshot
Filament
PuzzleDifficultIndieStory RichSci-fi

Filament

5.5308 16

Release date: 23 Apr, 2020

Solve challenging cable-based puzzles and uncover what really happened to the crew of The Alabaster. Now with Hint System (for those ultra tricky puzzles).

Windows |   Linux | Steam Achievements | Full controller support

PuzzleDifficultIndieStory RichSci-fiStrategySpaceBeautifulGreat SoundtrackTop-DownMinimalistColorfulSingleplayerCasual2DLogicSandboxReplay ValueMinigamesFemale Protagonist

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Drone Swarm screenshotDrone Swarm screenshotDrone Swarm screenshotDrone Swarm screenshotDrone Swarm screenshot
Drone Swarm
Sci-fiActionReal Time TacticsCombatPhysics

Drone Swarm

3.389 45

Release date: 20 Oct, 2020

Drone Swarm is a very unique take on tactical games. Control 32,000 drones in quick, fast-paced fights. Combine your swarm abilities and counter constantly evolving attacks of your opponents. Survive varying enemy waves, get upgrades to your swarm, and make it to the next system alive!

Windows | Steam Achievements

Sci-fiActionReal Time TacticsCombatPhysicsIndieSingleplayerTacticalStrategyRTSSpaceFast-PacedReal-TimeCartoonyExperimentalAdventureStory RichTop-DownFightingFlight

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Star Trek Online screenshotStar Trek Online screenshotStar Trek Online screenshotStar Trek Online screenshotStar Trek Online screenshotStar Trek Online screenshotStar Trek Online screenshotStar Trek Online screenshotStar Trek Online screenshot
Star Trek Online
Free to PlaySci-fiMassively MultiplayerSpaceRPG

Star Trek Online

7.511298 3131

Release date: 31 Jan, 2012

In Star Trek Online, the Star Trek universe appears for the first time on a truly massive scale. Players take the captain's chair as they command their own starship and crew. Explore strange new worlds, seek out new life and new civilizations, and boldly go where no one has gone before.

Windows | Steam Achievements | Full controller support

Free to PlaySci-fiMassively MultiplayerSpaceRPGMMORPGOpen WorldMultiplayerActionCharacter CustomizationThird PersonAdventurePvPSingleplayerPvECo-opOnline Co-OpStrategyAction RPGTactical

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The Turing Test screenshotThe Turing Test screenshotThe Turing Test screenshotThe Turing Test screenshotThe Turing Test screenshotThe Turing Test screenshotThe Turing Test screenshotThe Turing Test screenshotThe Turing Test screenshot
The Turing Test
PuzzleFirst-PersonSci-fiFemale ProtagonistSpace

The Turing Test

7.44288 605

Release date: 30 Aug, 2016

The Turing Test is a challenging first-person puzzle game set on Jupiter’s moon, Europa. You are Ava Turing, an engineer for the International Space Agency (ISA) sent to discover the cause behind the disappearance of the ground crew stationed there.

Windows | Steam Achievements | Full controller support | Steam Trading Cards

PuzzleFirst-PersonSci-fiFemale ProtagonistSpaceAdventureSingleplayerAtmosphericStory RichGreat SoundtrackArtificial IntelligenceShortPhilosophicalPsychological HorrorRobotsIndieHorrorFPSMystery

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Hate Plus screenshotHate Plus screenshotHate Plus screenshotHate Plus screenshotHate Plus screenshotHate Plus screenshot
Hate Plus
Visual NovelIndieAnimeSci-fiStory Rich

Hate Plus

5.2389 65

Release date: 19 Aug, 2013

Let's spend the next three real-time days together uncovering the mystery of what went horribly wrong on a derelict generation ship, with the help of a spunky/more-than-slightly-traumatized AI sidekick! A sequel to Analogue: A Hate Story that tells a whole new hate story of its own.

Windows |   Mac |   Linux | Steam Achievements

Visual NovelIndieAnimeSci-fiStory RichPoliticsGreat SoundtrackInteractive FictionSingleplayerLGBTQ+Female ProtagonistMultiple EndingsRomanceDating SimMystery2DAdventure

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"Saved it. Very cool design and idea depth."
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  In spotlight:

Gordian Quest on Steam