| Name | | Reviews | Release Date | Tags |
 | HELLDIVERS™ 2 | 799,652 | Feb. 8, 2024 | Action Capitalism Co-op Comedy 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 | 651,869 | 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 | 644,190 | Oct. 1, 2019 | Action Adventure Atmospheric Co-op Competitive FPS First-Person Free to Play Loot Looter Shooter Lore-Rich MMORPG Massively Multiplayer Multiplayer Open World PvE PvP Sci-fi Shooter Space |
 | Among Us | 635,386 | Nov. 16, 2018 | 2D Action Aliens Cartoony Casual Co-op Colorful Funny Local Multiplayer Minigames Multiplayer Online Co-Op Party Game Psychological PvP Sci-fi Social Deduction Space Survival Top-Down |
 | No Man's Sky | 300,069 | Aug. 12, 2016 | Action Adventure Atmospheric Crafting Exploration FPS First-Person Indie Multiplayer Open World Open World Survival Craft Procedural Generation Sandbox Sci-fi Simulation Singleplayer Space Space Sim Survival VR |
 | Deep Rock Galactic | 294,986 | May 13, 2020 | Action Action Roguelike Atmospheric Class-Based Co-op Combat Dark Dwarf Exploration FPS First-Person Horror Loot Looter Shooter Procedural Generation PvE Sci-fi Shooter Space Survival |
 | Halo: The Master Chief Collection | 231,665 | Dec. 3, 2019 | Action Adventure Aliens Atmospheric Beautiful Classic Co-op Epic FPS First-Person Great Soundtrack Horror Lore-Rich Multiplayer Online Co-Op Sci-fi Shooter Singleplayer Space Story Rich |
 | Halo Infinite | 179,499 | Nov. 15, 2021 | Action Adventure Aliens Atmospheric Cinematic Co-op Competitive FPS First-Person Free to Play Lore-Rich Multiplayer Open World PvP Sci-fi Shooter Singleplayer Soundtrack Space Story Rich |
 | STAR WARS Jedi: Fallen Order™ | 146,287 | 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 |
 | Warhammer 40,000: Space Marine 2 | 146,178 | 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 |
 | Stellaris | 134,742 | 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 | 129,531 | 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 | 116,151 | Feb. 5, 2019 | Adventure Atmospheric Automation Base Building Building Co-op Colorful Crafting Exploration Indie Multiplayer Open World Open World Survival Craft Sandbox Sci-fi Simulation Singleplayer Space Survival Third Person |
 | Starfield | 111,526 | Sept. 5, 2023 | Action Action RPG Action-Adventure Adventure Atmospheric Character Customization Cinematic Exploration First-Person Great Soundtrack Moddable Open World RPG Realistic Sci-fi Singleplayer Space Space Sim Story Rich Third Person |
 | Kerbal Space Program | 107,920 | April 27, 2015 | Adventure Building Comedy Difficult Education Exploration Funny Indie Moddable Open World Physics Replay Value Sandbox Sci-fi Science Simulation Singleplayer Space Space Sim Strategy |
 | Space Engineers | 99,352 | Feb. 28, 2019 | Action Base Building Building Co-op Combat Exploration Moddable Multiplayer Open World Physics PvE PvP Realistic Sandbox Simulation Singleplayer Space Space Sim Strategy Survival |
 | Starbound | 87,041 | 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 RPG Relaxing Sandbox Sci-fi Space Survival |
 | Dyson Sphere Program | 81,454 | Jan. 20, 2021 | 3D Automation Base Building Building Casual City Builder Early Access Indie Management Open World RTS Resource Management Sandbox Sci-fi Simulation Singleplayer Space Space Sim Strategy Third Person |
 | Outer Wilds | 81,056 | 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 | 80,867 | June 11, 2020 | Action Adventure Aliens Character Customization Co-op Combat Controller FPS First-Person Multiplayer Online Co-Op PvP Sci-fi Shooter Singleplayer Space Tactical Third Person Third-Person Shooter Vehicular Combat |
 | Elite Dangerous | 79,944 | 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 |
 | PlanetSide 2 | 74,335 | Nov. 20, 2012 | Action Adventure Co-op FPS First-Person 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™ | 72,045 | July 21, 2020 | Action Action RPG Adventure Atmospheric Character Customization Choices Matter Controller Free to Play Great Soundtrack MMORPG Massively Multiplayer Multiplayer Open World Party-Based RPG PvP RPG Sci-fi Space Story Rich Third Person |
 | STAR WARS Jedi: Survivor™ | 71,917 | 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 |
 | Spore | 64,250 | Dec. 19, 2008 | Adventure Aliens Cartoon Cartoony Casual Colony Sim Colorful Comedy Cute Exploration Family Friendly Funny God Game Open World Resource Management Sandbox Sci-fi Science Simulation Space |
 | The Planet Crafter | 61,505 | 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 | 61,480 | 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 | 57,922 | May 14, 2021 | Action Action RPG Atmospheric Character Customization Choices Matter Classic Combat Female Protagonist Great Soundtrack Military Nudity RPG Romance Sci-fi Sexual Content Shooter Singleplayer Space Story Rich Third-Person Shooter |
 | Dead Space | 54,097 | 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 | 52,149 | Sept. 11, 2025 | Action Action RPG Action-Adventure Adventure Co-op Controller FPS First-Person Funny Futuristic LGBTQ+ Loot Looter Shooter Multiplayer Online Co-Op Open World PvE RPG Sci-fi Space |
 | Icarus | 48,141 | 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 | 46,480 | Oct. 6, 2014 | Action Adventure Aliens Atmospheric Difficult FPS Female Protagonist First-Person Gore Great Soundtrack Horror Psychological Horror Sci-fi Shooter Singleplayer Space Stealth Survival Survival Horror VR |
 | Star Wars: Battlefront 2 (Classic, 2005) | 46,008 | July 8, 2009 | Action Addictive Adventure Classic Co-op Epic FPS First-Person Great Soundtrack Military Moddable Multiplayer Sci-fi Shooter Singleplayer Space Strategy Tactical Third Person Third-Person Shooter |
 | Deep Rock Galactic: Survivor | 44,162 | 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 | 44,146 | 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 | 38,164 | 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 | 37,271 | April 5, 2022 | Action Adventure Beautiful Co-op Epic Family Friendly Funny Great Soundtrack LEGO Local Co-Op Memes Multiplayer Online Co-Op Open World Puzzle Sci-fi Singleplayer Space Story Rich Third Person |
 | Prey | 36,424 | May 4, 2017 | Action Adventure Aliens Atmospheric Exploration FPS First-Person 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 | 34,723 | 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 | 34,353 | 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 | 33,847 | 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 | 31,887 | 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 | 31,401 | Oct. 13, 2014 | Action Action RPG Adventure Atmospheric Co-op Comedy FPS First-Person Funny Loot Looter Shooter Memes Multiplayer Online Co-Op Open World RPG Sci-fi Shooter Singleplayer Space |
 | Starship Troopers: Extermination Playtest | 29,095 | March 26, 2024 | 3D Action Aliens Arcade Arena Shooter Base Building Class-Based Co-op Combat FPS First-Person Multiplayer Online Co-Op PvE Realistic Sci-fi Shooter Singleplayer Space Wargame |
 | Starship Troopers: Extermination | 29,092 | Oct. 10, 2024 | 3D Action Aliens Arcade Arena Shooter Base Building Class-Based Co-op Combat FPS First-Person Multiplayer Online Co-Op PvE Realistic Sci-fi Shooter Singleplayer Space Wargame |
 | Empyrion - Galactic Survival | 28,877 | 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 |
 | Warhammer 40,000: Rogue Trader | 28,830 | Dec. 7, 2023 | Action Adventure Atmospheric CRPG Character Customization Choices Matter Co-op Dark Fantasy Fantasy Multiplayer RPG Sci-fi Singleplayer Space Story Rich Strategy Tactical Turn-Based Combat Turn-Based Strategy Warhammer 40K |
 | Warhammer 40,000: Rogue Trader Playtest | 28,778 | May 19, 2023 | Action Adventure Atmospheric CRPG Character Customization Choices Matter Co-op Dark Fantasy Fantasy Multiplayer RPG Sci-fi Singleplayer Space Story Rich Strategy Tactical Turn-Based Combat Turn-Based Strategy Warhammer 40K |
 | Surviving Mars | 28,261 | March 15, 2018 | Base Building Building City Builder Colony Sim Futuristic Great Soundtrack Management Mars Moddable Open World RTS Resource Management Sandbox Sci-fi Simulation Singleplayer Space Space Sim Strategy Survival |
 | STAR WARS™ Knights of the Old Republic™ | 27,780 | Sept. 5, 2009 | Action Adventure Atmospheric Choices Matter Classic Exploration Fantasy Female Protagonist Great Soundtrack Moddable Open World Party-Based RPG RPG Real-Time with Pause Sci-fi Singleplayer Space Story Rich Third Person Turn-Based |
 | Trailmakers | 27,730 | Sept. 18, 2019 | Action Action-Adventure Adventure Building Co-op Campaign Colorful Crafting Exploration Family Friendly Jet Multiplayer Online Co-Op Open World Physics Racing Sandbox Singleplayer Space Survival Vehicular Combat |
 | Kerbal Space Program 2 | 27,091 | Feb. 24, 2023 | Adventure Atmospheric Building Difficult Early Access Exploration Funny Indie Moddable Multiplayer Open World Physics Realistic Sandbox Sci-fi Science Simulation Singleplayer Space Space Sim |
 | Universe Sandbox | 26,018 | Aug. 24, 2015 | Atmospheric Casual Destruction Early Access Education Exploration Family Friendly God Game Indie Open World Physics Realistic Relaxing Sandbox Sci-fi Science Simulation Singleplayer Space Space Sim |
 | Cell to Singularity - Evolution Never Ends | 25,911 | Nov. 3, 2021 | Atmospheric Casual Clicker Dinosaurs Early Access Education Family Friendly Free to Play God Game Historical Idler Multiplayer Point & Click Sandbox Sci-fi Science Simulation Singleplayer Space Strategy |
 | HELLDIVERS™ | 25,155 | Dec. 7, 2015 | 4 Player Local Action Co-op Comedy 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 |
 | Risk of Rain Returns | 24,635 | Nov. 8, 2023 | 2D Action Action Roguelike Arcade Atmospheric Class-Based Co-op Combat Controller Local Co-Op Loot Looter Shooter Multiplayer Online Co-Op Pixel Graphics PvE Roguelike Sci-fi Singleplayer Space |
 | STAR WARS™: Squadrons | 24,632 | Oct. 1, 2020 | Action Adventure Co-op Controller FPS Female Protagonist First-Person Flight Multiplayer Online Co-Op PvP Sci-fi Shooter Simulation Singleplayer Space Space Sim Spaceships Strategy VR |
 | Dead Space 2 | 24,004 | Jan. 25, 2011 | Action Adventure Aliens Atmospheric Blood Co-op Combat Futuristic Gore Horror Multiplayer Sci-fi Shooter Singleplayer Space Story Rich Survival Survival Horror Third Person Third-Person Shooter |
 | The Outer Worlds | 23,977 | Oct. 23, 2020 | Action Action RPG Action-Adventure Adventure Character Customization Choices Matter Colorful Comedy Exploration FPS First-Person Funny Open World PvE RPG Sci-fi Shooter Singleplayer Space Story Rich |
 | X4: Foundations | 23,007 | 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 | 22,484 | April 24, 2018 | Action Adventure Character Customization Difficult Futuristic Great Soundtrack Management Mechs Multiplayer RPG Robots Sci-fi Singleplayer Space Story Rich Strategy Tactical Turn-Based Turn-Based Strategy Turn-Based Tactics |
 | Dead Space (2008) | 22,220 | 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™ | 21,759 | Aug. 23, 2012 | Action Adventure Atmospheric Character Customization Choices Matter Classic Female Protagonist Great Soundtrack Moddable Multiple Endings Party-Based RPG RPG Real-Time with Pause Sci-fi Singleplayer Space Story Rich Third Person Turn-Based Turn-Based Combat |
 | Aliens: Fireteam Elite | 20,913 | Aug. 23, 2021 | Action Aliens Atmospheric Character Customization Co-op Co-op Campaign Controller Horror Multiplayer Online Co-Op PvE RPG Sci-fi Shooter Singleplayer Space Survival Survival Horror Third Person Third-Person Shooter |
 | Star Trek Online | 20,736 | Jan. 31, 2012 | Action Action RPG Adventure Character Customization Co-op Free to Play MMORPG Massively Multiplayer Multiplayer Online Co-Op Open World PvE PvP RPG Sci-fi Singleplayer Space Strategy Tactical Third Person |
 | LEGO® Star Wars™: The Complete Saga | 20,153 | Nov. 12, 2009 | Action Adventure Casual Classic Co-op Comedy Controller 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 | 19,175 | 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 | 18,738 | 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 | 17,683 | Oct. 23, 2015 | Adventure Blood Casual Co-op Comedy First-Person Funny Gore Horror Indie Multiplayer Parody Physics Relaxing Sandbox Sci-fi Simulation Singleplayer Space Walking Simulator |
 | ENDLESS™ Space 2 | 16,978 | 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 | 16,724 | Nov. 3, 2016 | Action Adventure Atmospheric Co-op FPS First-Person Futuristic Great Soundtrack Hero Shooter Multiplayer Post-apocalyptic Quick-Time Events Robots Sci-fi Shooter Singleplayer Space Story Rich War Zombies |
 | Dome Keeper | 15,835 | 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 |
 | Dome Keeper Playtest | 15,830 | Feb. 10, 2026 | 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 | 15,806 | June 11, 2020 | Action Action RPG Adventure Character Customization Choices Matter Female Protagonist LGBTQ+ Multiplayer Nudity Open World RPG Sci-fi Sexual Content Shooter Singleplayer Space Story Rich Third Person Third-Person Shooter Violent |
 | LOCKDOWN Protocol | 15,428 | Nov. 18, 2025 | 3D Action Casual Conversation Cute FPS First-Person Investigation Multiplayer Perma Death Puzzle PvP Real Time Tactics Sci-fi Social Deduction Space Strategy Stylized Team-Based Time Management |
 | Mass Effect (2007) | 14,826 | Dec. 19, 2008 | Action Action RPG Adventure Atmospheric Character Customization Choices Matter Female Protagonist Great Soundtrack Immersive Open World RPG Real-Time with Pause Romance Sci-fi Shooter Singleplayer Space Story Rich Third Person Third-Person Shooter |
 | IXION | 14,421 | Dec. 7, 2022 | Atmospheric Base Building Building Choices Matter City Builder Colony Sim Dark Difficult Economy Exploration Indie Management Post-apocalyptic RTS Resource Management Simulation Singleplayer Space Strategy Survival |
 | Aliens: Dark Descent | 14,366 | June 19, 2023 | 3D Action Action-Adventure Aliens Combat Dark Horror Isometric RTS Real Time Tactics Sci-fi Singleplayer Space Stealth Strategy Survival Tactical Top-Down Top-Down Shooter Violent |
 | STAR WARS™ Republic Commando | 14,186 | July 8, 2009 | Action Adventure Atmospheric Classic Co-op Dark Epic FPS First-Person Futuristic Great Soundtrack Multiplayer Sci-fi Shooter Singleplayer Space Strategy Tactical Team-Based War |
 | Breathedge | 13,985 | Feb. 25, 2021 | Action Action-Adventure Adventure Aliens Atmospheric Base Building Co-op Crafting Early Access Exploration First-Person Indie Open World Open World Survival Craft Sandbox Sci-fi Simulation Singleplayer Space Survival |
 | Sid Meier's Civilization: Beyond Earth | 13,886 | 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 |
 | SpaceEngine | 13,812 | June 11, 2019 | 3D Atmospheric Casual Colorful Early Access Education Flight Futuristic Indie Open World Procedural Generation Realistic Relaxing Sandbox Sci-fi Science Simulation Singleplayer Space Space Sim |
 | Subverse | 13,530 | 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 | 13,363 | Oct. 3, 2022 | Action Alternate History Atmospheric Early Access Extraction Shooter FPS First-Person Loot Looter Shooter Military Open World Perma Death Pirates PvP Realistic Shooter Space Space Sim Tactical War |
 | Marauders: Tech Test | 13,363 | Sept. 6, 2022 | Action Alternate History Atmospheric Early Access Extraction Shooter FPS First-Person Loot Looter Shooter Military Open World Perma Death Pirates PvP Realistic Shooter Space Space Sim Tactical War |
 | Mountain | 12,921 | 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 | 12,848 | July 6, 2010 | Adventure Co-op Comedy 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 |
 | Nova Drift | 12,757 | Aug. 12, 2024 | 2D Action Action RPG Action Roguelike Arcade Arena Shooter Bullet Hell Casual Colorful Early Access Great Soundtrack Indie Replay Value Retro Roguelike Roguelite Shoot 'Em Up Shooter Singleplayer Space |
 | The Alters | 12,753 | June 13, 2025 | 3D Action Action-Adventure Adventure Base Building Crafting Exploration Futuristic Management Psychological Resource Management Sci-fi Science Singleplayer Space Story Rich Strategy Survival Third Person Time Management |
 | The Alters Playtest | 12,711 | May 23, 2025 | 3D Action Action-Adventure Adventure Base Building Crafting Exploration Futuristic Management Psychological Resource Management Sci-fi Science Singleplayer Space Story Rich Strategy Survival Third Person Time Management |
 | Avorion | 12,690 | March 9, 2020 | 3D Action RPG Building Choose Your Own Adventure Economy Exploration Flight Management Open World PvE Sandbox Sci-fi Simulation Space Space Sim Spaceships Third Person Trading Vehicular Combat Voxel |
 | Awesomenauts | 11,833 | Aug. 1, 2012 | 2D Action Cartoon Co-op Competitive Controller Free to Play Funny Great Soundtrack Indie Local Co-Op Local Multiplayer MOBA Multiplayer Online Co-Op Platformer Sci-fi Side Scroller Space Strategy |
 | shapez 2 | 11,806 | Aug. 15, 2024 | 3D Automation Base Building Building Casual Crafting Early Access Futuristic Logic Management Procedural Generation Puzzle Relaxing Sandbox Simulation Singleplayer Space Strategy Trains Transportation |
 | Homeworld Remastered Collection | 11,756 | Feb. 25, 2015 | 4X Action Adventure Atmospheric Classic Epic Female Protagonist Futuristic Great Soundtrack Moddable Multiplayer RTS Remake Sci-fi Simulation Singleplayer Space Story Rich Strategy Tactical |
 | Cosmoteer Beta Test | 11,512 | 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 Space Sim Spaceships Strategy Survival |
 | Cosmoteer: Starship Architect & Commander | 11,507 | 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 Space Sim Spaceships Strategy Survival |
 | EVERSPACE™ 2 | 11,470 | April 6, 2023 | Action Action RPG Action-Adventure 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 | 11,194 | June 18, 2020 | Action Co-op Combat 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 | 11,163 | Aug. 18, 2015 | Base Building Building Co-op Destruction Futuristic Grand Strategy Indie Mechs Multiplayer Online Co-Op PvP RTS Real Time Tactics Robots Sci-fi Simulation Singleplayer Space Strategy War |
 | Learn to Fly 3 | 10,927 | 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 |