| Name | | Reviews | Release Date | Tags |
 | HELLDIVERS™ 2 | 813,328 | Feb. 8, 2024 | Action Capitalism Comedy Co-op Difficult Extraction Shooter Gore Great Soundtrack Multiplayer Online Co-Op Open World Psychological Horror PvE Sci-fi Shooter Singleplayer Space Third Person Third-Person Shooter Violent |
 | Warframe | 658,768 | March 25, 2013 | Action Action RPG Character Customization Co-op Free to Play Hack and Slash Looter Shooter Lore-Rich Massively Multiplayer Ninja Online Co-Op Parkour PvE RPG Sci-fi Shooter Singleplayer Space Third Person Third-Person Shooter |
 | Destiny 2 | 645,544 | Oct. 1, 2019 | Action Adventure Atmospheric Competitive Co-op First-Person FPS Free to Play Loot Looter Shooter Lore-Rich Massively Multiplayer MMORPG Multiplayer Open World PvE PvP Sci-fi Shooter Space |
 | Among Us | 639,675 | Nov. 16, 2018 | 2D Action Aliens Cartoony Casual Colorful Co-op Funny Local Multiplayer Minigames Multiplayer Online Co-Op Party Game Psychological PvP Sci-fi Social Deduction Space Survival Top-Down |
 | No Man's Sky | 303,903 | Aug. 12, 2016 | Action Adventure Atmospheric Crafting Exploration First-Person FPS Indie Multiplayer Open World Open World Survival Craft Procedural Generation Sandbox Sci-fi Simulation Singleplayer Space Space Sim Survival VR |
 | Deep Rock Galactic | 298,106 | May 13, 2020 | Action Action Roguelike Atmospheric Class-Based Combat Co-op Dark Dwarf Exploration First-Person FPS Horror Loot Looter Shooter Procedural Generation PvE Sci-fi Shooter Space Survival |
 | Halo: The Master Chief Collection | 233,950 | Dec. 3, 2019 | Action Adventure Aliens Atmospheric Beautiful Classic Co-op Epic First-Person FPS Great Soundtrack Horror Lore-Rich Multiplayer Online Co-Op Sci-fi Shooter Singleplayer Space Story Rich |
 | Halo Infinite | 179,934 | Nov. 15, 2021 | Action Adventure Aliens Atmospheric Cinematic Competitive Co-op First-Person FPS Free to Play Lore-Rich Multiplayer Open World PvP Sci-fi Shooter Singleplayer Soundtrack Space Story Rich |
 | Warhammer 40,000: Space Marine 2 | 152,761 | Sept. 9, 2024 | 3D Action Action-Adventure Adventure Cinematic Co-op Fantasy Futuristic Multiplayer Narration PvE Realistic Sci-fi Singleplayer Space Third Person Third-Person Shooter War Wargame Warhammer 40K |
 | STAR WARS Jedi: Fallen Order™ | 148,926 | Nov. 14, 2019 | Action Action-Adventure Adventure Atmospheric Exploration Family Friendly Fantasy Fighting Hack and Slash Metroidvania Open World Platformer Puzzle RPG Sci-fi Souls-like Space Story Rich Swordplay Third Person |
 | Stellaris | 136,331 | May 9, 2016 | 4X Atmospheric Diplomacy Exploration Futuristic Grand Strategy Great Soundtrack Management Military Moddable Multiplayer Procedural Generation Real-Time with Pause Replay Value Sandbox Sci-fi Simulation Singleplayer Space Strategy |
 | Oxygen Not Included | 130,934 | July 30, 2019 | 2D Adventure Base Building Building Colony Sim Difficult Exploration Indie Management Multiplayer Open World Resource Management Sandbox Sci-fi Simulation Singleplayer Space Space Sim Strategy Survival |
 | ASTRONEER | 117,243 | Feb. 5, 2019 | Adventure Atmospheric Automation Base Building Building Colorful Co-op Crafting Exploration Indie Multiplayer Open World Open World Survival Craft Sandbox Sci-fi Simulation Singleplayer Space Survival Third Person |
 | Starfield | 112,930 | Sept. 5, 2023 | Action Action-Adventure Action RPG Adventure Atmospheric Character Customization Cinematic Exploration First-Person Great Soundtrack Moddable Open World Realistic RPG Sci-fi Singleplayer Space Space Sim Story Rich Third Person |
 | Kerbal Space Program | 109,968 | April 27, 2015 | Adventure Building Comedy Difficult Education Exploration Funny Indie Moddable Open World Physics Replay Value Sandbox Science Sci-fi Simulation Singleplayer Space Space Sim Strategy |
 | Space Engineers | 99,664 | Feb. 28, 2019 | Action Base Building Building Combat Co-op Exploration Moddable Multiplayer Open World Physics PvE PvP Realistic Sandbox Simulation Singleplayer Space Space Sim Strategy Survival |
 | Starbound | 87,150 | July 22, 2016 | 2D Action Adventure Atmospheric Building Co-op Crafting Exploration Indie Multiplayer Online Co-Op Open World Open World Survival Craft Pixel Graphics Relaxing RPG Sandbox Sci-fi Space Survival |
 | Outer Wilds | 83,230 | June 18, 2020 | 3D Action Adventure Atmospheric Beautiful Epic Exploration First-Person Great Soundtrack Horror Indie Mystery Open World Psychological Horror Puzzle Sci-fi Simulation Singleplayer Space Story Rich |
 | STAR WARS™ Battlefront™ II | 82,419 | June 11, 2020 | Action Adventure Aliens Character Customization Combat Controller Co-op First-Person FPS Multiplayer Online Co-Op PvP Sci-fi Shooter Singleplayer Space Tactical Third Person Third-Person Shooter Vehicular Combat |
 | Dyson Sphere Program | 82,136 | Jan. 20, 2021 | 3D Automation Base Building Building Casual City Builder Early Access Indie Management Open World Resource Management RTS Sandbox Sci-fi Simulation Singleplayer Space Space Sim Strategy Third Person |
 | Elite Dangerous | 80,583 | April 2, 2015 | Action Adventure Difficult Exploration First-Person Massively Multiplayer Multiplayer Online Co-Op Open World RPG Sandbox Sci-fi Simulation Singleplayer Space Space Sim Strategy TrackIR Trading VR |
 | STAR WARS Jedi: Survivor™ | 74,860 | April 27, 2023 | Action Action-Adventure Adventure Atmospheric Character Customization Combat Difficult Exploration Great Soundtrack Multiplayer Open World Parkour RPG Sci-fi Singleplayer Souls-like Space Story Rich Swordplay Third Person |
 | PlanetSide 2 | 74,456 | Nov. 20, 2012 | Action Adventure Co-op First-Person FPS Free to Play Futuristic Massively Multiplayer Multiplayer Online Co-Op Open World PvP RPG Sci-fi Shooter Space Strategy Tactical Team-Based War |
 | STAR WARS™: The Old Republic™ | 72,821 | July 21, 2020 | Action Action RPG Adventure Atmospheric Character Customization Choices Matter Controller Free to Play Great Soundtrack Massively Multiplayer MMORPG Multiplayer Open World Party-Based RPG PvP RPG Sci-fi Space Story Rich Third Person |
 | SPORE™ | 64,949 | Dec. 19, 2008 | Adventure Aliens Cartoon Cartoony Casual Colony Sim Colorful Comedy Cute Exploration Family Friendly Funny God Game Open World Resource Management Sandbox Science Sci-fi Simulation Space |
 | The Planet Crafter | 63,688 | April 10, 2024 | Adventure Aliens Automation Base Building Building Co-op Crafting Exploration First-Person Immersive Sim Online Co-Op Open World Open World Survival Craft Resource Management Sandbox Sci-fi Singleplayer Space Story Rich Survival |
 | FTL: Faster Than Light | 61,781 | Sept. 14, 2012 | 2D Adventure Choose Your Own Adventure Difficult Indie Perma Death Procedural Generation Real-Time with Pause Replay Value Roguelike Roguelite Sci-fi Simulation Singleplayer Space Space Sim Strategy Survival Tactical Top-Down |
 | Mass Effect™ Legendary Edition | 59,075 | May 14, 2021 | Action Action RPG Atmospheric Character Customization Choices Matter Classic Combat Female Protagonist Great Soundtrack Military Nudity Romance RPG Sci-fi Sexual Content Shooter Singleplayer Space Story Rich Third-Person Shooter |
 | Dead Space | 56,455 | Jan. 27, 2023 | Action Action-Adventure Adventure Aliens Atmospheric Blood Combat Dark Horror Psychological Horror Remake Sci-fi Shooter Singleplayer Space Survival Survival Horror Third Person Third-Person Shooter Violent |
 | Borderlands 4 | 53,839 | Sept. 11, 2025 | Action Action-Adventure Action RPG Adventure Controller Co-op First-Person FPS Funny Futuristic LGBTQ+ Loot Looter Shooter Multiplayer Online Co-Op Open World PvE RPG Sci-fi Space |
 | ICARUS | 51,270 | Dec. 3, 2021 | Adventure Base Building Building Co-op Crafting Exploration First-Person Mining Multiplayer Nature Online Co-Op Open World Open World Survival Craft PvE Realistic Sandbox Science Space Survival Third Person |
 | Alien: Isolation | 46,900 | Oct. 6, 2014 | Action Adventure Aliens Atmospheric Difficult Female Protagonist First-Person FPS Gore Great Soundtrack Horror Psychological Horror Sci-fi Shooter Singleplayer Space Stealth Survival Survival Horror VR |
 | STAR WARS™ Battlefront II (Classic, 2005) | 46,059 | July 8, 2009 | Action Addictive Adventure Classic Co-op Epic First-Person FPS Great Soundtrack Military Moddable Multiplayer Sci-fi Shooter Singleplayer Space Strategy Tactical Third Person Third-Person Shooter |
 | Deep Rock Galactic: Survivor | 44,767 | Sept. 17, 2025 | Action Action Roguelike Aliens Arcade Arena Shooter Atmospheric Bullet Hell Combat Dark Dwarf Procedural Generation PvE Roguelike Roguelite Sci-fi Score Attack Singleplayer Space Top-Down Top-Down Shooter |
 | Deep Rock Galactic: Survivor Playtest | 44,756 | June 2, 2023 | Action Action Roguelike Aliens Arcade Arena Shooter Atmospheric Bullet Hell Combat Dark Dwarf Procedural Generation PvE Roguelike Roguelite Sci-fi Score Attack Singleplayer Space Top-Down Top-Down Shooter |
 | EVE Online | 38,520 | Dec. 15, 2010 | Adventure Character Customization Co-op Difficult Economy Exploration Lore-Rich Massively Multiplayer Mining Open World PvE PvP Sandbox Sci-fi Simulation Space Space Sim Strategy Third Person Trading |
 | LEGO® Star Wars™: The Skywalker Saga | 37,484 | April 5, 2022 | Action Adventure Beautiful Co-op Epic Family Friendly Funny Great Soundtrack LEGO Local Co-Op Memes Multiplayer Nudity Open World Puzzle Sci-fi Singleplayer Space Story Rich Third Person |
 | Prey | 36,828 | May 4, 2017 | Action Adventure Aliens Atmospheric Exploration First-Person FPS Futuristic Great Soundtrack Horror Immersive Sim Open World Psychological Horror RPG Sci-fi Singleplayer Space Stealth Story Rich Survival Horror |
 | STAR WARS™ Empire at War - Gold Pack | 35,046 | May 25, 2010 | 4X Action Adventure Atmospheric Classic Co-op Epic Grand Strategy Great Soundtrack Mod Moddable Multiplayer RTS Sci-fi Simulation Singleplayer Space Strategy Tactical War |
 | The Callisto Protocol™ | 34,507 | Dec. 1, 2022 | 3D Action Action-Adventure Adventure Cinematic Dark Futuristic Horror Linear PvE Realistic Robots Sci-fi Shooter Singleplayer Space Story Rich Survival Horror Third Person Third-Person Shooter |
 | Marvel's Guardians of the Galaxy | 34,278 | Oct. 26, 2021 | Action Action-Adventure Adventure Aliens Atmospheric Choices Matter Cinematic Comedy Exploration Great Soundtrack Multiplayer Open World RPG Sci-fi Shooter Singleplayer Space Story Rich Superhero Third-Person Shooter |
 | Mouthwashing | 32,410 | Sept. 26, 2024 | Adventure Atmospheric Dark Dark Humor Exploration First-Person Gore Horror Indie Mystery Narrative Psychological Psychological Horror Retro Singleplayer Space Story Rich Surreal Thriller Walking Simulator |
 | Borderlands: The Pre-Sequel | 31,507 | Oct. 13, 2014 | Action Action RPG Adventure Atmospheric Comedy Co-op First-Person FPS Funny Loot Looter Shooter Memes Multiplayer Online Co-Op Open World RPG Sci-fi Shooter Singleplayer Space |
 | Warhammer 40,000: Rogue Trader | 29,925 | Dec. 7, 2023 | Action Adventure Atmospheric Character Customization Choices Matter Co-op CRPG Dark Fantasy Fantasy Multiplayer RPG Sci-fi Singleplayer Space Story Rich Strategy Tactical RPG Turn-Based Combat Turn-Based Strategy Warhammer 40K |
 | Trailmakers | 29,387 | Sept. 18, 2019 | Action Action-Adventure Adventure Building Colorful Co-op Campaign Crafting Exploration Family Friendly Jet Multiplayer Online Co-Op Open World Physics Racing Sandbox Singleplayer Space Survival Vehicular Combat |
 | Starship Troopers: Extermination Playtest | 29,293 | March 26, 2024 | 3D Action Aliens Arcade Arena Shooter Base Building Class-Based Combat Co-op First-Person FPS Multiplayer Online Co-Op PvE Realistic Sci-fi Shooter Singleplayer Space Wargame |
 | Starship Troopers: Extermination | 29,292 | Oct. 10, 2024 | 3D Action Aliens Arcade Arena Shooter Base Building Class-Based Combat Co-op First-Person FPS Multiplayer Online Co-Op PvE Realistic Sci-fi Shooter Singleplayer Space Wargame |
 | Empyrion - Galactic Survival | 28,971 | Aug. 5, 2020 | Building Co-op Crafting Exploration FPS Multiplayer Open World Open World Survival Craft Physics PvE PvP Sandbox Sci-fi Simulation Singleplayer Space Space Sim Strategy Survival Voxel |
 | Surviving Mars | 28,388 | March 15, 2018 | Base Building Building City Builder Colony Sim Futuristic Great Soundtrack Management Mars Moddable Open World Resource Management RTS Sandbox Sci-fi Simulation Singleplayer Space Space Sim Strategy Survival |
 | STAR WARS™ Knights of the Old Republic™ | 27,921 | Sept. 5, 2009 | Action Adventure Atmospheric Choices Matter Classic Exploration Fantasy Female Protagonist Great Soundtrack Moddable Open World Party-Based RPG Real-Time with Pause RPG Sci-fi Singleplayer Space Story Rich Third Person Turn-Based |
 | Kerbal Space Program 2 | 27,350 | Feb. 24, 2023 | Adventure Atmospheric Building Difficult Early Access Exploration Funny Indie Moddable Multiplayer Open World Physics Realistic Sandbox Science Sci-fi Simulation Singleplayer Space Space Sim |
 | Universe Sandbox | 26,537 | Aug. 24, 2015 | Atmospheric Casual Destruction Early Access Education Exploration Family Friendly God Game Indie Open World Physics Realistic Relaxing Sandbox Science Sci-fi Simulation Singleplayer Space Space Sim |
 | Cell to Singularity - Evolution Never Ends | 26,495 | Nov. 3, 2021 | Atmospheric Casual Clicker Dinosaurs Early Access Education Family Friendly Free to Play God Game Historical Idler Multiplayer Point & Click Sandbox Science Sci-fi Simulation Singleplayer Space Strategy |
 | HELLDIVERS™ Dive Harder Edition | 25,379 | Dec. 7, 2015 | 4 Player Local Action Comedy Co-op Difficult Funny Hack and Slash Isometric Local Co-Op Mechs Multiplayer Online Co-Op Sci-fi Shooter Space Strategy Survival Top-Down Top-Down Shooter Twin Stick Shooter |
 | STAR WARS™: Squadrons | 24,737 | Oct. 1, 2020 | Action Adventure Controller Co-op Female Protagonist First-Person Flight FPS Multiplayer Online Co-Op PvP Sci-fi Shooter Simulation Singleplayer Space Spaceships Space Sim Strategy VR |
 | Risk of Rain Returns | 24,669 | Nov. 8, 2023 | 2D Action Action Roguelike Arcade Atmospheric Class-Based Combat Controller Co-op Local Co-Op Loot Looter Shooter Multiplayer Online Co-Op Pixel Graphics PvE Roguelike Sci-fi Singleplayer Space |
 | Dead Space™ 2 | 24,563 | Jan. 25, 2011 | Action Adventure Aliens Atmospheric Blood Combat Co-op Futuristic Gore Horror Multiplayer Sci-fi Shooter Singleplayer Space Story Rich Survival Survival Horror Third Person Third-Person Shooter |
 | The Outer Worlds | 24,108 | Oct. 23, 2020 | Action Action-Adventure Action RPG Adventure Character Customization Choices Matter Colorful Comedy Exploration First-Person FPS Funny Open World PvE RPG Sci-fi Shooter Singleplayer Space Story Rich |
 | X4: Foundations | 23,543 | Nov. 30, 2018 | 3D 4X Action Atmospheric Building Economy Exploration First-Person Flight Management Moddable Open World Sandbox Sci-fi Simulation Singleplayer Space Space Sim Strategy Trading |
 | BATTLETECH | 22,617 | April 24, 2018 | Action Adventure Character Customization Difficult Futuristic Great Soundtrack Management Mechs Multiplayer Robots RPG Sci-fi Singleplayer Space Story Rich Strategy Tactical Turn-Based Turn-Based Strategy Turn-Based Tactics |
 | Dead Space (2008) | 22,428 | Jan. 9, 2009 | Action Adventure Aliens Atmospheric Dark Futuristic Gore Horror Immersive Sci-fi Shooter Silent Protagonist Singleplayer Space Story Rich Survival Survival Horror Third Person Third-Person Shooter Zombies |
 | STAR WARS™ Knights of the Old Republic™ II - The Sith Lords™ | 21,903 | Aug. 23, 2012 | Action Adventure Atmospheric Character Customization Choices Matter Classic Female Protagonist Great Soundtrack Moddable Multiple Endings Party-Based RPG Real-Time with Pause RPG Sci-fi Singleplayer Space Story Rich Third Person Turn-Based Turn-Based Combat |
 | Aliens: Fireteam Elite | 21,093 | Aug. 23, 2021 | Action Aliens Atmospheric Character Customization Controller Co-op Co-op Campaign Horror Multiplayer Online Co-Op PvE RPG Sci-fi Shooter Singleplayer Space Survival Survival Horror Third Person Third-Person Shooter |
 | Star Trek Online | 20,952 | Jan. 31, 2012 | Action Action RPG Adventure Character Customization Co-op Free to Play Massively Multiplayer MMORPG Multiplayer Online Co-Op Open World PvE PvP RPG Sci-fi Singleplayer Space Strategy Tactical Third Person |
 | LEGO® Star Wars™ - The Complete Saga | 20,280 | Nov. 12, 2009 | Action Adventure Casual Classic Comedy Controller Co-op Family Friendly Funny Great Soundtrack LEGO Local Co-Op Local Multiplayer Multiplayer Online Co-Op Open World Puzzle Sci-fi Singleplayer Space |
 | Warhammer 40,000: Inquisitor - Martyr | 19,260 | June 5, 2018 | Action Action RPG Adventure Co-op Dark Games Workshop Hack and Slash Indie Inventory Management Isometric Loot Multiplayer Online Co-Op RPG Sci-fi Singleplayer Space Violent War Warhammer 40K |
 | Hardspace: Shipbreaker | 18,911 | May 24, 2022 | Action Building Destruction Dystopian Early Access First-Person Futuristic Great Soundtrack Open World Physics Procedural Generation Puzzle Relaxing Sandbox Sci-fi Simulation Singleplayer Space Space Sim Strategy |
 | Viscera Cleanup Detail | 17,779 | Oct. 23, 2015 | Adventure Blood Casual Comedy Co-op First-Person Funny Gore Horror Indie Multiplayer Parody Physics Relaxing Sandbox Sci-fi Simulation Singleplayer Space Walking Simulator |
 | ENDLESS Space™ 2 | 17,045 | May 18, 2017 | 4X Action Atmospheric Co-op Grand Strategy Great Soundtrack Indie Moddable Multiplayer Open World RPG RTS Sandbox Sci-fi Singleplayer Space Strategy Turn-Based Turn-Based Strategy War |
 | Call of Duty®: Infinite Warfare | 16,905 | Nov. 3, 2016 | Action Adventure Atmospheric Co-op First-Person FPS Futuristic Great Soundtrack Hero Shooter Multiplayer Post-apocalyptic Quick-Time Events Robots Sci-fi Shooter Singleplayer Space Story Rich War Zombies |
 | Dome Keeper | 16,521 | Sept. 27, 2022 | 2D Action Adventure Atmospheric Combat Controller Exploration Physics Pixel Graphics Post-apocalyptic Procedural Generation Replay Value Resource Management Retro Roguelike Sci-fi Singleplayer Space Tactical Tower Defense |
 | Mass Effect™: Andromeda | 16,059 | June 11, 2020 | Action Action RPG Adventure Character Customization Choices Matter Female Protagonist Multiplayer Nudity Open World Romance RPG Sci-fi Sexual Content Shooter Singleplayer Space Story Rich Third Person Third-Person Shooter Violent |
 | LOCKDOWN Protocol | 15,803 | Nov. 18, 2025 | 3D Action Casual Conversation Cute First-Person FPS Investigation Multiplayer Perma Death Puzzle PvP Real Time Tactics Sci-fi Social Deduction Space Strategy Stylized Team-Based Time Management |
 | Mass Effect (2007) | 14,835 | Dec. 19, 2008 | Action Action RPG Adventure Atmospheric Character Customization Choices Matter Female Protagonist Great Soundtrack Immersive Open World Real-Time with Pause Romance RPG Sci-fi Shooter Singleplayer Space Story Rich Third Person Third-Person Shooter |
 | IXION | 14,626 | Dec. 7, 2022 | Atmospheric Base Building Building Choices Matter City Builder Colony Sim Dark Difficult Economy Exploration Indie Management Post-apocalyptic Resource Management RTS Simulation Singleplayer Space Strategy Survival |
 | Aliens: Dark Descent | 14,557 | June 19, 2023 | 3D Action Action-Adventure Aliens Combat Dark Horror Isometric Real Time Tactics RTS Sci-fi Singleplayer Space Stealth Strategy Survival Tactical Top-Down Top-Down Shooter Violent |
 | SpaceEngine | 14,416 | June 11, 2019 | 3D Atmospheric Casual Colorful Early Access Education Flight Futuristic Indie Open World Procedural Generation Realistic Relaxing Sandbox Science Sci-fi Simulation Singleplayer Space Space Sim |
 | STAR WARS™ Republic Commando™ | 14,261 | July 8, 2009 | Action Adventure Atmospheric Classic Co-op Dark Epic First-Person FPS Futuristic Great Soundtrack Multiplayer Sci-fi Shooter Singleplayer Space Strategy Tactical Team-Based War |
 | Breathedge | 14,141 | Feb. 25, 2021 | Action Action-Adventure Adventure Aliens Atmospheric Base Building Crafting Early Access Exploration First-Person Indie Multiplayer Open World Open World Survival Craft Sandbox Sci-fi Simulation Singleplayer Space Survival |
 | Sid Meier's Civilization®: Beyond Earth™ | 13,924 | Oct. 23, 2014 | 4X Action Adventure Aliens Atmospheric Exploration Futuristic Grand Strategy Hex Grid Moddable Multiplayer Replay Value Sci-fi Simulation Singleplayer Space Strategy Tactical Turn-Based Turn-Based Strategy |
 | Subverse | 13,594 | Nov. 15, 2024 | Action Adventure Casual Comedy Early Access FPS Hentai Indie Mature Memes NSFW Nudity RPG Sci-fi Sexual Content Shoot 'Em Up Singleplayer Space Story Rich Strategy |
 | Marauders | 13,413 | Oct. 3, 2022 | Action Alternate History Atmospheric Early Access Extraction Shooter First-Person FPS Loot Looter Shooter Military Open World Perma Death Pirates PvP Realistic Shooter Space Space Sim Tactical War |
 | Marauders: Tech Test | 13,410 | Sept. 6, 2022 | Action Alternate History Atmospheric Early Access Extraction Shooter First-Person FPS Loot Looter Shooter Military Open World Perma Death Pirates PvP Realistic Shooter Space Space Sim Tactical War |
 | The Alters | 13,225 | June 13, 2025 | 3D Action Action-Adventure Adventure Base Building Crafting Exploration Futuristic Management Psychological Resource Management Science Sci-fi Singleplayer Space Story Rich Strategy Survival Third Person Time Management |
 | The Alters Playtest | 13,185 | May 23, 2025 | 3D Action Action-Adventure Adventure Base Building Crafting Exploration Futuristic Management Psychological Resource Management Science Sci-fi Singleplayer Space Story Rich Strategy Survival Third Person Time Management |
 | Mountain | 12,915 | Aug. 18, 2014 | Ambient Beautiful Casual Experimental Funny God Game Great Soundtrack Idler Indie Music Nature Philosophical Procedural Generation Puzzle Realistic Relaxing Simulation Singleplayer Space Third Person |
 | Moonbase Alpha | 12,853 | July 6, 2010 | Adventure Comedy Co-op First-Person Free to Play Funny Massively Multiplayer Memes Multiplayer Online Co-Op Open World Puzzle Realistic Sandbox Simulation Singleplayer Space Strategy Third Person Walking Simulator |
 | Avorion | 12,792 | March 9, 2020 | 3D Action RPG Building Choose Your Own Adventure Economy Exploration Flight Management Open World PvE Sandbox Sci-fi Simulation Space Spaceships Space Sim Third Person Trading Vehicular Combat Voxel |
 | Awesomenauts | 11,838 | Aug. 1, 2012 | 2D Action Cartoon Competitive Controller Co-op Free to Play Funny Great Soundtrack Indie Local Co-Op Local Multiplayer MOBA Multiplayer Online Co-Op Platformer Sci-fi Side Scroller Space Strategy |
 | Homeworld Remastered Collection | 11,815 | Feb. 25, 2015 | 4X Action Adventure Atmospheric Classic Epic Female Protagonist Futuristic Great Soundtrack Moddable Multiplayer Remake RTS Sci-fi Simulation Singleplayer Space Story Rich Strategy Tactical |
 | Cosmoteer Beta Test | 11,646 | March 14, 2025 | 2D Adventure Atmospheric Building Difficult Early Access Exploration Indie Multiplayer Online Co-Op Pixel Graphics Real-Time with Pause Sci-fi Simulation Singleplayer Space Spaceships Space Sim Strategy Survival |
 | Cosmoteer: Starship Architect & Commander | 11,642 | Oct. 24, 2022 | 2D Adventure Atmospheric Building Difficult Early Access Exploration Indie Multiplayer Online Co-Op Pixel Graphics Real-Time with Pause Sci-fi Simulation Singleplayer Space Spaceships Space Sim Strategy Survival |
 | EVERSPACE™ 2 | 11,624 | April 6, 2023 | Action Action-Adventure Action RPG Adventure Combat Exploration Flight Loot Looter Shooter Open World PvE RPG Sci-fi Shooter Simulation Singleplayer Space Story Rich Third Person Third-Person Shooter |
 | Dead Space™ 3 | 11,492 | June 18, 2020 | Action Combat Co-op Crafting Dark Futuristic Gore Horror Multiplayer Online Co-Op Sci-fi Shooter Singleplayer Space Survival Survival Horror Third Person Third-Person Shooter Thriller Violent |
 | Planetary Annihilation: TITANS | 11,216 | Aug. 18, 2015 | Base Building Building Co-op Destruction Futuristic Grand Strategy Indie Mechs Multiplayer Online Co-Op PvP Real Time Tactics Robots RTS Sci-fi Simulation Singleplayer Space Strategy War |
 | Learn to Fly 3 | 11,015 | May 12, 2017 | 2D Arcade Casual Character Customization Cute Family Friendly Flight Free to Play Indie Logic Management Physics Puzzle Relaxing Runner Sandbox Simulation Singleplayer Space Strategy |
 | Ratchet & Clank: Rift Apart | 10,874 | July 26, 2023 | 3D Platformer Action Action-Adventure Adventure Cartoony Colorful Co-op Cute Family Friendly Female Protagonist Funny Open World Platformer Sci-fi Shooter Singleplayer Space Story Rich Third Person Third-Person Shooter |
 | From the Depths | 10,820 | Nov. 6, 2020 | Artificial Intelligence Building Co-op Campaign Crafting Gun Customization Military Multiplayer Naval Naval Combat Physics RTS Sandbox Simulation Space Strategy Survival Tutorial Vehicular Combat Voxel War |
 | The Planet Crafter: Prologue | 10,657 | Dec. 19, 2021 | Adventure Automation Base Building Building Colorful Crafting Exploration First-Person Free to Play Immersive Sim Mars Multiplayer Open World Open World Survival Craft Resource Management Sandbox Singleplayer Space Story Rich Survival |
 | Sins of a Solar Empire®: Rebellion | 10,189 | June 12, 2012 | 3D 4X Base Building Co-op Diplomacy Exploration Grand Strategy Management Military Multiplayer Online Co-Op Replay Value RTS Sandbox Sci-fi Simulation Singleplayer Space Space Sim Strategy |