- #1 MOVING WITH THE MOON: Mastering Universal Gravitation!
97% matchNo user reviews2026
Dev: Wada System Limited
Windows
This is a new action game where you steer the earth. Steer the Earth, when both the Earth and the Moon are in the goal zone, the stage is cleared. Stars are constantly pulling on each other with universal gravitation. You can experience a simulated universal gravitation.
Why similar: Science 31.5% ★, Space 22.2%, Futuristic 9.7%, Casual 9.4%, Action 9.1%
- #2 NBody Gravitation
96% match4 user reviews100% of 4 reviews2023
Dev: Sean Frett
Windows · Linux
Place asteroids and planets and send them orbiting into targets in a physics-based puzzle game where everything attracts everything.
Why similar: Science 31.1% ★, Space 18.7%, Futuristic 18.1%, Casual 13.3%, Physics 8.8%
- #3 That Rocket Game
96% matchPositive85% of 26 reviews2023
Dev: Dan's Games
Windows
That Rocket Game is the ultimate space themed relaxing arcade game. Upgrade your rocket to reach further into the unknown...
Why similar: Science 38.7% ★, Space 31%, Physics 7.1%, Minimalist 5.9%, Casual 5.1%
- #4 SlingStar
95% matchPositive88% of 24 reviews2022
Dev: greasefiregames
Windows
SlingStar is a casual 2D Space puzzle adventure, journey your way across 3 galaxies in this relaxing experience!
Why similar: Space 34.1%, Physics 16.4%, Casual 14.2%, Futuristic 11.4%, 2D 9.4%
- #5 Celestarium
94% matchNo user reviews
Dev: Celestarium Dev
Windows · Mac · Linux
Celestarium, an astronomy game where you start as an amateur astronomer. Discover and map planets, sell data to corporates, improve your gear, start your own space agency, manage your own missions, build and fly rockets to discovered bodies. Explore, prosper and expand your presence in space.
Why similar: Science 30% ★, Space 25.1%, Futuristic 15.3%, Physics 11.7%, Sci-fi 8.5%
- #6 Slingshottr
94% match4 user reviews100% of 4 reviews2024
Dev: tentcoding
Windows
A co-op sci-fi featuring scrap, piracy, and your talkative line manager Clara.
Why similar: Space 32.2%, Physics 15.3%, Sci-fi 10.3%, Futuristic 9.6%, 2D 8%
- #7 Constellations: Beyond the edges
93% matchNo user reviews2028
Dev: Hanoi Studios
Windows · Mac · Linux
After an accident at a space station, you lose all communication with the earth and are no longer able to locate yourself in space, your best chance of returning is to use the space monitoring system to identify known constellations and configure the route back home.
Why similar: Science 40.1% ★, Space 28.3%, Sci-fi 10%, Minimalist 6.3%, 2D 5.8%
- #8 The Twin Paradox
91% matchVery Positive90% of 113 reviews2024
Dev: Beyond Standard Games
Windows · Linux
The Twin paradox is an RPG where you must prepare yourself for the first time travel. Make decisions, explore, and learn real science with the scientists of the "Beyond" laboratory. It's up to you to make the journey a success.
Why similar: Science 42.3% ★, Space 25.3%, Physics 12.2%, Sci-fi 8.1%, 2D 5.4%
- #9 Portal Journey: Portarius
92% matchPositive81% of 26 reviews2018
Dev: Dmitry Poznukhov
Windows · Mac · Linux
Open a portal and begin your journey! Teleport rocks, water and your spaceship. Immerse in handcrafted colorful worlds, solve puzzles and be the first at the center of the Earth.
Why similar: Science 33% ★, Space 19.9%, Casual 13.6%, Physics 11.2%, Sci-fi 7.8%
- #10 Matheroïde
91% match1 user reviews100% of 1 reviews2025
Dev: Gilles Godard
Windows
Pilot your UFO through an asteroid field… with the power of math! 💥🧠 Dodge and solve operations to destroy asteroids before they crash into you. A fun and educational arcade game that sharpens your brain while testing your reflexes.
Why similar: Space 37.5%, Futuristic 25%, Action 10.5%, Casual 9.5%, 2D 8.3%
- #11 Just Do Eat
90% matchNo user reviews
Dev: Indion
Windows
Microscopic SurvivalEmbark on a microscopic survival journey where you eat or be eaten.Simple controls meet strategic evolution in this unique roguelike RPG._Hunt the weak, flee the strong, and evolve your way to become the apex predator of this endless micro universe.
Why similar: Space 26.5%, Science 25.5% ★, Action 9.9%, Casual 9.1%, 2D 8%
- #12 JAMPING FISH
89% matchPositive95% of 20 reviews2022
Dev: ARMA GAMES
Windows
All you have to do is control the fish with your keyboard to jump over moving stones, plates, cars and more, and avoid starfish or cats to reach the top of the statue.
Why similar: Space 33.3%, Action-Adventure 20.4%, Action 15.2%, Exploration 14%, Physics 12.8%
- #13 Bagburnian Remote
88% matchNo user reviews
Dev: Roman Chumak
Windows · Mac · Linux
Message from extra-terrestrial intelligence.
Why similar: Science 44.2% ★, Space 31.8%, Sci-fi 11.6%, Minimalist 10.5%, Indie 2%
- #14 The first contact
87% matchNo user reviews
Dev: 刘凯
Windows
This is a stand-alone game. Players can freely explore different areas of the ship, collect different items, fight with alien monsters, rescue aliens, and ultimately kill all alien monsters on the ship.The ship is in low Earth orbit, and the player can enjoy the beautiful scenery of Earth and space.
Why similar: Space 39.8%, Futuristic 16.1%, Sci-fi 12.7%, Exploration 9.2%, Action 8.9%
- #15 Bionic Bay
85% matchVery Positive86% of 657 reviews2025
Dev: Psychoflow StudioPub: Kepler Interactive
Windows
Median: 2.0 hrsMean: 5.2 hrs≥1hr: 72%
A scientist uses a unique teleportation instrument to escape an ancient biomechanical world filled with imaginative technology, deadly traps, and hidden secrets.
Why similar: Science 31.1% ★, Space 22.6%, Physics 11.2%, Sci-fi 9.5%, Action-Adventure 8.2%
- #16 Colorgrid
86% matchVery Positive92% of 154 reviews2019
Dev: Minimol Games
Windows · Mac
Colorgrid is a puzzle game about mixing colors in a Lab. Find the correct positions for your lasers and mirrors to get the right mix of colors in each material.
Why similar: Science 30.2% ★, Space 16.9%, Physics 13.6%, Futuristic 11.7%, Minimalist 7.4%
- #17 Neutrino
86% match7 user reviews100% of 7 reviews2022
Dev: Mario Brandao
Windows · Mac · Linux
Neutrino, The Mission - a minimalist game where a photon seeks the core of Neutrinos Kingdom, find out why they have mass and destroy them!
Why similar: Science 37.3% ★, Space 25.9%, Minimalist 9.2%, Physics 8.1%, Casual 7.6%
- #18 PlanetariumVR
84% match9 user reviews78% of 9 reviews2021
Dev: hublab
Windows
Planetarium for VR to learn about the stars, constellations, and deep sky objects from the Messier, Caldwell, Herschel400, NGC, IC, Sharpless, and Arp catalogs. Learn the positions of stars and the Messier objects; play the minesweeper in VR in a polyhedron.
Why similar: Science 37.3% ★, Space 23.3%, Casual 11.1%, Physics 10.5%, Old School 8.5%
- #19 Solar Expanse - Space Exploration Manager
84% matchNo user reviews2026
Dev: SpaceOpsPub: Games Operators
Windows
Explore the Solar System. Mine and drop asteroids. Colonize and terraform. Lead the space race and compete with other corporations on your way to profit. Watch the expansion of human race over the centuries. Then go beyond and conquer the galaxy!
Why similar: Science 36% ★, Space 26.6%, Physics 12.4%, Futuristic 10.4%, Sci-fi 7.5%
- #20 Lunar Lander Redux
83% match7 user reviews100% of 7 reviews2024
Dev: atrixsanna
Windows
Explore a rough space landscape in a fragile capsule. Good for an hour of fun or frustration depending on skill. Physics mostly accurate.
Why similar: Space 38.3%, Physics 16.4%, Old School 15.2%, Action 9.8%, Minimalist 9.7%
- #21 Ankhway: The Interplanetary Legacy
82% match1 user reviews100% of 1 reviews2025
Dev: Mac S
Windows
Indie Adventure Sci-fi Videogame ☥𓂀𓂀𓂀𓋹𓁈𓃠𓆃☥𓅓𓆣 IT'S THE TIME, IT'S YOUR DESTINY, ¡ENTER THE ANKHWAY! ☥𓂀𓂀𓂀𓋹𓁈𓃠𓆃☥𓅓𓆣
Why similar: Space 20.5%, Futuristic 13.8%, Action-Adventure 13.2%, Sci-fi 10.5%, Old School 10.3%
- #22 Ambrosia Sky: Act One
81% matchVery Positive93% of 214 reviews2025
Dev: Soft Rains
Windows
You left. Now they’re dead. Ambrosia Sky: Act One is an immersive sim about exploring an asteroid colony devastated by an unknown contamination. Survive and harvest strains of hostile alien fungi, explore treacherous environments, and find meaning and beauty in so much death—the first of two acts.
Why similar: Science 30.3% ★, Space 19.5%, Futuristic 12.2%, Physics 9.7%, Action-Adventure 9.6%
- #23 Sanctum Arcadia
82% match1 user reviews100% of 1 reviews2023
Dev: Phoslyte LLC
Windows
Sanctum Arcadia is a game where you must fight your way through increasingly dangerous zones filled with enemies, hazards, and mystery. Sanctum Arcadia has a unique but still familiar progression system, challenging and engaging combat, all in a smooth Arcade-like experience.
Why similar: Space 39.5%, Futuristic 21.5%, Action-Adventure 16.5%, Sci-fi 10.7%, Action 4.5%
- #24 The ultimate Math teaching game
81% match1 user reviews100% of 1 reviews2024
Dev: MARK MISIN ENGINEERING LTD
Windows
Unleash your inner math genius! Our cutting-edge game combines Algebra, Geometry, and Trigonometry, making learning a thrilling adventure. Solve practical problems, cement your understanding, and kickstart your science and engineering journey. Ready to level up? Play now!
Why similar: Science 45.4% ★, Space 21.7%, Physics 10.5%, Futuristic 9.9%, Exploration 7.3%
- #25 Stellar Terminus
80% matchNo user reviews
Dev: Entropy Studio
Windows
To stave off the cold, crushing loneliness at the end of time, embrace eternity. Stellar Terminus is a combat-focused, hard sci-fi dungeon crawler set at the heat death of the universe. Scavenge for resources, robots, and knowledge in the procedurally generated ruins of long-gone civilizations.
Why similar: Science 31.7% ★, Space 26.5%, Futuristic 15.6%, Sci-fi 8.6%, Exploration 7.4%
- #26 Tehnodrom
79% match8 user reviews25% of 8 reviews2024
Dev: Niko BelikPub: Piece Of Voxel
Windows
"Tehnodrom" offers exciting gameplay, a variety of enemies and weapons, and the ability to make strategic decisions that affect the course of the game. The game is intended for fans of casual games in the 2D platform style who love challenges and want to test themselves as a brave tehnodrom pilot.
Why similar: Space 25.9%, Futuristic 22.8%, Casual 16.6%, Action 15.9%, Physics 11.3%
- #27 Deadline:Aphelion
78% match5 user reviews100% of 5 reviews2025
Dev: MerlynPub: Merlyn Games
Windows
In Deadline: Aphelion, you play as a mercenary tasked with defending the research facility from the hordes of alien spiders that have been drawn to it.
Why similar: Science 47.1% ★, Space 30%, Sci-fi 11.6%, Action 7.8%, Singleplayer 3.4%
- #28 Phenom Overdrive
78% matchNo user reviews2024
Dev: LoonByte
Windows
A space adventure across colorful and abstract environments with simple controls and mechanics. Featuring precise, physics based, action. Sometimes a fast-paced thrill. Sometimes a slightly methodic thinker. Sometimes, even, a rage inducing dread. Always exhilarating.
Why similar: Science 28.2% ★, Space 22.8%, Action-Adventure 10.3%, Physics 9.2%, Exploration 6.9%
- #29 Coronavirus - Nano Force
77% matchMostly Positive72% of 18 reviews2020
Dev: Daniel Snow
Windows · Linux
A fast-paced arcade shooter where you pilot a nano-ship in the fight against the Coronavirus. Grab powerups to upgrade your weapons and eliminate the virus infection.
Why similar: Science 50.3% ★, Sci-fi 13.3%, Action 12%, 2D 10.4%, Casual 9.6%
- #30 Aces of the Galaxy™
77% matchMixed56% of 52 reviews2009
Dev: Artech StudiosPub: Activision
Windows
3, 2, 1 Blast-Off! Launch yourself into the intense space-shooter Aces of the Galaxy™ A non-stop, old-school arcade thrill-ride for the 21st century and beyond. Utilize an impressive arsenal of upgradeable weapons including high powered missile launchers, devastating torpedoes and the ever-reliant chain gun to annihilate the ships of...
Why similar: Space 48.9%, Action 26.7%, Casual 24.4%
- #31 Unstable Scientific
75% matchNo user reviews
Dev: Studio Castle Soodalkov
Windows
Rescue scientists, build your own lab, and discover the secret of Toromiro Island in this intricate pixel art platformer!
Why similar: Science 47.3% ★, Physics 14.1%, Action-Adventure 12%, Sci-fi 9.5%, Exploration 8%
- #32 Entangled
76% match6 user reviews100% of 6 reviews2018
Dev: MentaLoop Games
Windows · Mac · Linux
Entangled is a physics puzzle game revolving around grappling gun mechanics. You are immersed in a colorful environment while being entranced by a relaxing space ambient soundtrack. It is challenging, but extremely rewarding.
Why similar: Science 28.6% ★, Space 18.7%, Physics 12.4%, Action 11.8%, Sci-fi 7.3%
- #33 Hollow Frontier
74% matchNo user reviews
Dev: Sheipeg the game dev
Windows
Hollow Frontier is a thrilling sci-fi adventure where survival is your only option. Explore a haunting, collapsed world. Solve puzzles, fight for survival, and uncover dark secrets. Experience dynamic gameplay in both 3rd person and FPS perspectives
Why similar: Space 31.6%, Futuristic 22.2%, Sci-fi 11.9%, Action-Adventure 11.2%, Action 8%
- #34 Galactic Heroes: Rise of the Black Alliance
74% match6 user reviews100% of 6 reviews2023
Dev: MR Games Studio
Windows · Mac · Linux
Embark on a perilous journey as Max, the space ranger, to hunt down the leaders of the Black Alliance. Pilot different spacecraft, dodge asteroids, battle enemies, and confront ruthless leaders. Become a true hero of space!
Why similar: Space 39.4%, Action-Adventure 22.8%, Casual 22.1%, 2D 11.3%, Singleplayer 3.8%
- #35 Arena 54 - Visual Novel Action Adventure
75% match3 user reviews67% of 3 reviews2021
Dev: Peaksel
Windows · Mac
Arena 54 - Visual Novel Action Adventure is a story-driven RPG that brings the universe together in an epic war for the Crystal. Save the planet Earth simply by making the right choices. Choose wisely, or the Crystal will be lost in Doom Hammer’s hands.
Why similar: Space 31.2%, Sci-fi 11.1%, Action-Adventure 9.5%, Futuristic 9.5%, Action 8.3%
- #36 Distant Shore: BRETAGNE
73% matchNo user reviews
Dev: DISTANT SHORE
Windows
Distant Shore: BRETAGNE is a first-person parkour physics based game, where you wield your magnetic gauntlets to move, bend and break metal obstacles. Navigate through a ravaged world to complete the mission given by your employer.
Why similar: Science 36.3% ★, Futuristic 14.9%, Physics 14.2%, Action-Adventure 11.7%, Sci-fi 8.3%
- #37 PuckIt Deluxe
73% matchNo user reviews
Dev: Blake Barentine
Windows · Mac
A totally bonkers mini golf x airhockey game!
Why similar: Space 30.3%, Physics 18.1%, Old School 11.9%, Action 10.1%, Casual 7.7%
- #38 colomoon
72% match2 user reviews100% of 2 reviews2024
Dev: inutako
Windows
This game is a highly difficult mountain climbing physics action game. All you need to do is one click and force roll.
Why similar: Space 23.7%, Physics 21.5%, Action 20.8%, 2D 12.5%, Action-Adventure 10.1%
- #39 Little Spaceman
71% matchPositive100% of 12 reviews2025
Dev: Noguiin
Windows
Control an astronaut, a collector of space relics, and explore the mysteries of the universe. Travel through nebulas, dodge asteroids, and discover rare artifacts while facing the challenges of deep space.
Why similar: Space 25.2%, Action 18.9%, Action-Adventure 18.5%, Casual 16.5%, Exploration 10.2%
- #40 ΔV: Rings of Saturn
70% matchVery Positive93% of 3,305 reviews2023
Dev: Kodera Software
Windows · Mac · Linux
Median: 8.3 hrsMean: 11.6 hrs≥1hr: 85%
A physics-based mining sim, set in the thickest debris field in Sol. Every action has a reaction, lasers are invisible without a medium, and your thrust is a potent weapon. Find trade, adapt your equipment to your playstyle, hire a crew to help. Unravel the mysteries of the rings, or just get rich.
Why similar: Science 29.7% ★, Space 26.9%, Physics 12.3%, Sci-fi 9.1%, Exploration 6.6%
- #41 Saturn Menace
71% match6 user reviews33% of 6 reviews2022
Dev: LFR games
Windows
Inmersive HORROR sci-fi game. Your exploration module has been damage by a meteor near the Saturn orbit where its an old abandoned spacecraft. Get power back on, explore space and search a replacement for the core of your spaceship
Why similar: Science 35.5% ★, Space 21.5%, Action-Adventure 17.5%, Futuristic 14.3%, Exploration 9.8%
- #42 Massive Effect
72% matchMixed67% of 18 reviews2019
Dev: NORSKA
Windows
Space shooter with multiple game modes. Destroy enemies, get experience and increase your level.
Why similar: Space 24.3%, Old School 16.7%, Futuristic 16.5%, Action 12.5%, Casual 10.9%
- #43 Blaster Master Zero 3
69% matchVery Positive88% of 469 reviews2021
Dev: INTI CREATES CO., LTD.
Windows
Median: 3.9 hrsMean: 6.6 hrs≥1hr: 82%
The Pinnacle of Mutant Blasting Action Is Here! — Blaster Master Zero 3's hybrid of sidescrolling and top-down action is back for its 3rd chapter, and more intense than ever before!
Why similar: Space 25.3%, Futuristic 17.7%, Old School 14.5%, Action-Adventure 10.6%, Exploration 7.9%
- #44 Star Swapper
71% match7 user reviews100% of 7 reviews2018
Dev: Titanite Games S.A.
Windows · Mac · Linux
STAR SWAPPER is a space puzzle game with relaxing gameplay. Complete each level by moving and arranging symbols, so they can form existing star constellations, and enjoy the journey towards the final frontier.
Why similar: Space 32%, Futuristic 16.4%, Casual 10%, Physics 8.8%, Grid-Based Movement 8%
- #45 Clingy
69% matchNo user reviews
Dev: EZY Studios
Windows
Stranded on a shattered moon, cling to your friends and magnets to escape through perilous landscapes. Fight gravity, chaos, and each other to reach freedom. Cling tight. Fling far. Escape together.
Why similar: Action-Adventure 18.3%, Space 17.2%, Futuristic 15.9%, Casual 15.5%, Action 10.7%
- #46 Dustdrive: The Lightspeed Project
69% matchNo user reviews
Dev: Tavernpunk Games
Windows · Mac · Linux
A minimalist factory puzzle game about reaching the speed of light. Build an experimental engine that runs off galactic dust to accelerate your ship to impossible speeds. Match dust signatures carefully and manage your energy to avoid Rapid Unscheduled Disassembly!
Why similar: Science 45.5% ★, Space 31.7%, 2D 5.8%, Sci-fi 5.2%, Minimalist 5.2%
- #47 Critical Point
67% matchPositive100% of 19 reviews2025
Dev: Boxwood Studio
Windows · Mac
Critical Point is a retro sci-fi casual strategy game. You have to make the particle count in reactor cells exceed 4, surpassing the critical point of fission to generate energy required for interstellar voyages.
Why similar: Science 34.2% ★, Space 23.6%, Futuristic 11.9%, Casual 8.7%, Sci-fi 7.7%
- #48 Retrobooster
70% matchPositive85% of 13 reviews2014
Dev: Really Slick
Windows · Linux
A reinvention of the cave-flyer for players who love games of skill. You control an extremely responsive ship, which opens up new possibilities for speed flying challenges, puzzles, and bullet hell scenarios. This game is set at 1980s difficulty--Survive it if you can.
Why similar: Space 36.3%, Old School 21.3%, Physics 16.1%, Action 15.6%, Sci-fi 9.4%
- #49 StarCore Legacy
68% match7 user reviews86% of 7 reviews2023
Dev: LunarCore Games
Windows
Remake to 2016's Legends of the Universe - StarCore, a Metroidvania style Action-Platformer with several abilities, enemies and areas to explore.
Why similar: Space 28.7%, Old School 22.3%, Action-Adventure 11.5%, Sci-fi 10.3%, Futuristic 9.6%
- #50 Snakes LTD
70% matchNo user reviews2023
Dev: mlThings.aiPub: zviyamin.com
Windows
Casual Snakes Combat. Kill other snakes and grow as much as you can.
Why similar: Space 31.7%, Action 22.4%, Casual 19.4%, Sci-fi 14.4%, Colorful 8.9%
- #51 Kerbal Space Program
66% matchOverwhelmingly Positive95% of 133,317 reviews2015
Dev: SquadPub: Private Division
Windows · Mac · Linux
Median: 5.3 hrsMean: 65.2 hrs≥1hr: 84%
In Kerbal Space Program, take charge of the space program for the alien race known as the Kerbals. You have access to an array of parts to assemble fully-functional spacecraft that flies (or doesn’t) based on realistic aerodynamic and orbital physics.
Why similar: Space 39.3%, Science 37.9% ★, Physics 14.2%, Exploration 3.5%, Sci-fi 3%
- #52 Cube War
67% matchMostly Positive77% of 13 reviews2024
Dev: Rawi Studio
Windows
An action game in which we try to survive by killing enemies in space.
Why similar: Space 38.5%, Action-Adventure 24%, Action 22.2%, 2D 11%, Singleplayer 3.4%
- #53 Outer Space Piñata
66% match6 user reviews100% of 6 reviews2025
Dev: Sundae Electronics LLC
Windows
Get ready for a cosmic candy explosion and a zero-G sugar rush! Blast open a hazardous piñata, clear the path for space trucks hauling everything from tacos to party supplies, and chase down delicious cosmic candy before it drifts away into deep space.
Why similar: Space 38%, Physics 18.2%, Futuristic 13%, Casual 12.9%, Sci-fi 11.8%
- #54 Universe Sandbox
66% matchOverwhelmingly Positive96% of 30,587 reviews2015
Dev: Giant Army
Windows · Mac
Median: 2.4 hrsMean: 23.5 hrs≥1hr: 71%
Create & destroy on an unimaginable scale with a realistic physics-based space simulator. Explore the beauty of our universe and the fragility of our planet. Use science to bend the laws of gravity, collide planets, boil away oceans, fire epic space lasers, and customize your universe.
Why similar: Science 38.3% ★, Space 32.2%, Physics 14.8%, Sci-fi 4.5%, Exploration 3.6%
- #55 Space Scaven
68% matchPositive85% of 33 reviews2016
Dev: Moon Pub Games
Windows · Linux
Median: 3.0 hrsMean: 3.4 hrs≥1hr: 89%
Space Scaven is a physical puzzle game about an engineer, whose job is to collect black boxes on abandoned space stations.
Why similar: Space 40%, Physics 19.8%, Action 15.2%, Sci-fi 13.9%, 2D 9.8%