Discounted Science Games on Steam
Unlike generic lists, our strategy game recommendations use a rigorous analysis of Steam user reviews to identify and feature only the best, community-validated science games. For those who prefer not to search, lists of the most played, top deals and best free science games are available at the bottom of the page.
Filters & Lists
Machinika: Museum
Welcome to the Museum! Machinika Museum is a mystery game where you discover beautiful and mysterious machines of extra-terrestrial origins in an atmospheric galaxy-spanning 3D puzzle game. Will you be able to understand their stories and discover what happened to their previous owner?
Size Matters
You play as a scientist who is shrinking every second in a race against time! Find all the ingredients and formulas scattered around the laboratory, which are necessary for producing the life-saving antidote. But beware, your time is very precious.
Main Assembly
You’re the designer, engineer and architect if you can imagine it you can create it! Construct robots of any shape or size from eight-legged spider bots to eerie UFO contraptions.
Per Aspera
Make Mars your own! Take control of the world’s most sophisticated AI (AMI) and terraform the surface of the Red Planet for a city-building experience on a planetary scale. Transform this barren world into a lush paradise and explore the surface for any ancient secrets that may be waiting.
Rover Mechanic Simulator
As an Engineer - crew member of one of the first Mars colonies - you are responsible for repairing and maintaining Mars Rovers. In this advanced simulator you will learn the internal details of various Mars Rovers and their components.
Ancestors: The Humankind Odyssey
Survive your evolution in Neogene Africa starting 10 million years ago. Ancestors: The Humankind Odyssey is a third-person open world survival game where you Explore, Expand, and Evolve to advance your clan to the next generation in the exciting new adventure from Panache Digital Games.
Beyond Blue
Beyond Blue is a single-player narrative adventure that takes you deep into our planet’s beating blue heart. Explore the awesome wonder and unbounded mystery that exists within the world’s ocean.
Genesis Alpha One Deluxe Edition
Hyperjump into the dark recesses of space with Genesis Alpha One - a roguelike FPS where you must build, maintain and navigate your ship through a galaxy filled with hostile alien and human threats. Explore, create and survive the militarized space race in order to secure humanity’s future.
Lightmatter
A first-person puzzler where shadows kill you. Watch your step or be swallowed by the darkness.
Moons of Madness
Moons of Madness is a first-person, story-driven cosmic horror game where the scientific exploration of Mars meets the supernatural dread of Lovecraft.
Valfaris
Set in a far corner of space, Valfaris is a heavy metal infused 2D action-platformer and the next game from the team behind Unity Awards finalist, Slain: Back From Hell. Brutal combat. Deadly enemies. Stunning pixel art. Savage soundtrack. Get ready to rip the galaxy a new wormhole.
while True: learn()
You’re a machine learning specialist who makes neural networks but your cat seems to be better at it. Now you must solve puzzles to build a cat-to-human translation system (who knows what else this cat is capable of!). Earn a fortune, buy kickass cat outfits, learn how machine learning really works!
DEPLOYMENT
Deployment is an intense competitive top-down shooter game. Infosoldiers, made of pure information, fight in an endless war between governments and megacorporations to rule over the digital systems that control the world. Deploy your troops from up to five different classes!
Tesla vs Lovecraft
Tesla vs Lovecraft is an intense top-down twin stick arena shooter from the creators of Crimsonland and Neon Chrome. Play as the enigmatic inventor Nikola Tesla harnessing the static energy to power up Tesla-Mech and give the lovecraftian nightmares a lesson in horror!
Suicide Guy
Suicide Guy is set in the incredibile and extraordinary dreams of its protagonist. What would you do in order to save the thing you love most? Immerse yourself into his weird dreams and help him to wake up before it's too late.
Odyssey - The Story of Science
Odyssey is an enchanting and innovative science adventure game. Help Kai and her family escape their captors on the Wretched Islands - and learn the history of astronomy, mechanics, and scientific reasoning as you read Kai's journal and solve puzzles along the way!
The Signal From Tölva
The Signal From Tölva is an open-world first-person shooter set on a distant, haunted, future world. Unlock savage weapons and recruit robots to fight alongside you as rival factions struggle to discover the source of the mysterious signal. What you discover will decide the fate of a world.
Ascent - The Space Game
Ascent is a PVE sandbox space MMO with 270 BILLION star systems and an emphasis on strong Sci Fi. It encourages Exploration, Colonization, Research, Asteroid mining, Farming, Trading, and Combat. Outside the tutorial sector, everything in-game has been built by players.
ChromaGun
Welcome to ChromaTec’s test lab! You’re here to test our state-of-the-art military-grade color-technology: The ChromaGun (patent pending)! Use it to solve our meticulously designed test chambers by painting the walls and droids. Remember how to mix colors from pre-school? Then you qualify!
Universe Sandbox
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.
Kerbal Space Program
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.
HyperRogue
A truly non-Euclidean tactical puzzle/roguelike!
The Talos Principle
The Talos Principle is a first-person puzzle game in the tradition of philosophical science fiction. Made by Croteam and written by Tom Jubert (FTL, The Swapper) and Jonas Kyratzes (The Sea Will Claim Everything).
Starpoint Gemini 2
Captain your own space ship and roam the galaxy in 3D in this tactical space simulator with tons of RPG depth ! Space has never looked so inviting - but images can betray...It has been two years since the end of the second Gemini war, the situation in the wartorn system is further from resolution than ever.
Most played science games on Steam
Take a look at the top science games that are currently attracting the largest player bases on the Steam platform, as of June 16th 2025.
1. Cell to Singularity - Evolution Never Ends
The epic story of evolution, technology, humanity, and dinosaurs is yours to tap. Cell to Singularity - Evolution Never Ends is a clicker, free to play and simulation game developed and published by Computer Lunch. Released on November 03rd 2021 has received 23,690 reviews of which 21,284 were positive and 2,406 were negative resulting in a rating of 8.8 out of 10. The game has hit the top spot as the #1 most played science game, thanks to its 2,539 peak concurrent players over the last day.
8.8
21,284
2,406
2,539
players
2. Kerbal Space Program
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. Kerbal Space Program is a space, simulation and sandbox game developed by Squad and published by Private Division. Released on April 27th 2015 has received 127,162 reviews of which 121,084 were positive and 6,078 were negative resulting in an impressive rating of 9.4 out of 10. While seeing 2,221 players online at once in the last 24 hours, this game is currently ranked #2 among science games based on player count.
9.4
121,084
6,078
2,221
players
3. Universe Sandbox
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. Universe Sandbox is a sandbox, space and simulation game developed and published by Giant Army. Released on August 24th 2015 has received 27,448 reviews of which 26,456 were positive and 992 were negative resulting in an impressive rating of 9.4 out of 10. While seeing 390 players online at once in the last 24 hours, this game is currently ranked #3 among science games based on player count.
9.4
26,456
992
390
players
4. Stationeers
Stationeers puts you in control of the construction and management of a space station to run by yourself or online with your friends. Complex atmospheric, electrical, manufacturing, agriculture, and gravitational systems require your thought and management at all times! Stationeers is a early access, space and base-building game developed and published by RocketWerkz. Released on December 12th 2017 has received 7,066 reviews of which 6,040 were positive and 1,026 were negative resulting in a rating of 8.3 out of 10. With 289 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played science games.
8.3
6,040
1,026
289
players
5. Juno: New Origins
Bring to life anything you can imagine from rockets and airplanes to cars and more. Automate them with a visual programming language. Explore 3D planets and make your own. Share your creations online. Complete contracts, conquer milestones, and unlock technology in the newly added Career Mode. Juno: New Origins is a building, science and space sim game developed and published by Jundroo and LLC. Released on January 26th 2023 has received 3,118 reviews of which 2,807 were positive and 311 were negative resulting in a rating of 8.7 out of 10. The game currently holds the #5 spot among the most played science games.
8.7
2,807
311
47
players
6. The Sapling
The Sapling is a short simulation game where you design your own plants and animals, and put them in a world together. Or you turn on random mutations, and see what evolution does to your ecosystem! The Sapling is a life sim, sandbox and science game developed and published by Wessel Stoop. Released on December 12th 2019 has received 1,494 reviews of which 1,342 were positive and 152 were negative resulting in a rating of 8.5 out of 10. The game currently holds the #6 spot among the most played science games.
8.5
1,342
152
38
players
7. while True: learn()
You’re a machine learning specialist who makes neural networks but your cat seems to be better at it. Now you must solve puzzles to build a cat-to-human translation system (who knows what else this cat is capable of!). Earn a fortune, buy kickass cat outfits, learn how machine learning really works! while True: learn() is a programming, simulation and education game developed and published by Luden.io. Released on January 17th 2019 has received 7,618 reviews of which 6,967 were positive and 651 were negative resulting in a rating of 8.9 out of 10. The game currently holds the #7 spot among the most played science games.
8.9
6,967
651
14
players
8. Thrive
An evolution simulation game. Take control of your species in the environment and edit your species as a whole. Compete with other evolving species for resources on an alien planet. Thrive is a simulation, science and sandbox game developed and published by Revolutionary Games Studio. Released on November 26th 2021 has received 1,327 reviews of which 1,228 were positive and 99 were negative resulting in a rating of 8.8 out of 10. The game currently holds the #8 spot among the most played science games.
8.8
1,228
99
14
players
9. Species: Artificial Life, Real Evolution
Play with evolution! Species: ALRE is a scientifically-grounded, emergent simulation of natural selection. Creatures evolve and speciate in response to in-game mutation and selection forces, allowing you to experience and tinker with evolution in real-time. Species: Artificial Life, Real Evolution is a simulation, sandbox and early access game developed and published by Quasar. Released on September 28th 2018 has received 958 reviews of which 716 were positive and 242 were negative resulting in a rating of 7.2 out of 10. The game currently holds the #9 spot among the most played science games.
7.2
716
242
4
players
10. Tyto Ecology
Build your biome! With an empty biodome as your canvas, add plants and animals from three different ecosystems. Observe interactions like hunting, blooming, and even decomposing! Will your biodome last for decades, or will it experience a total ecosystem collapse? You’re in control! Tyto Ecology is a simulation, indie and strategy game developed and published by Immersed Games. Released on April 14th 2016 has received 429 reviews of which 323 were positive and 106 were negative resulting in a rating of 7.1 out of 10. The game currently holds the #10 spot among the most played science games.
7.1
323
106
1
players
Best deals on science games on Steam
Discover fantastic savings with the best discounts on a variety of science games available on Steam right now, updated on June 16th 2025. Looking for even more deals? Use the search filters to explore a wider range of discounted science games.
1. Size Matters
You play as a scientist who is shrinking every second in a race against time! Find all the ingredients and formulas scattered around the laboratory, which are necessary for producing the life-saving antidote. But beware, your time is very precious. Size Matters is a simulation, casual and science game developed by Mazen Games and published by GrabTheGames. Released on March 12th 2021 has received 473 reviews of which 412 were positive and 61 were negative resulting in a rating of 8.1 out of 10. Featuring a massive 99% discount, this game currently holds the #1 spot in the best deals for science category.
8.1
412
61
-99%
9.75€
0.19€
2. Juno: New Origins
Bring to life anything you can imagine from rockets and airplanes to cars and more. Automate them with a visual programming language. Explore 3D planets and make your own. Share your creations online. Complete contracts, conquer milestones, and unlock technology in the newly added Career Mode. Juno: New Origins is a building, science and space sim game developed and published by Jundroo and LLC. Released on January 26th 2023 has received 3,118 reviews of which 2,807 were positive and 311 were negative resulting in a rating of 8.7 out of 10. Thanks to its incredible 97% discount, this game is now the #2 best deal in science games.
8.7
2,807
311
-97%
19.50€
0.63€
3. Kerbal Space Program
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. Kerbal Space Program is a space, simulation and sandbox game developed by Squad and published by Private Division. Released on April 27th 2015 has received 127,162 reviews of which 121,084 were positive and 6,078 were negative resulting in an impressive rating of 9.4 out of 10. Thanks to its incredible 93% discount, this game is now the #3 best deal in science games.
9.4
121,084
6,078
-93%
39.99€
3.11€
4. Universe Sandbox
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. Universe Sandbox is a sandbox, space and simulation game developed and published by Giant Army. Released on August 24th 2015 has received 27,448 reviews of which 26,456 were positive and 992 were negative resulting in an impressive rating of 9.4 out of 10. Currently offered at a significant 66% discount, this title has earned the #4 position in the best deals for science games.
9.4
26,456
992
-66%
28.99€
10.03€
5. while True: learn()
You’re a machine learning specialist who makes neural networks but your cat seems to be better at it. Now you must solve puzzles to build a cat-to-human translation system (who knows what else this cat is capable of!). Earn a fortune, buy kickass cat outfits, learn how machine learning really works! while True: learn() is a programming, simulation and education game developed and published by Luden.io. Released on January 17th 2019 has received 7,618 reviews of which 6,967 were positive and 651 were negative resulting in a rating of 8.9 out of 10. Currently offered at a significant 65% discount, this title has earned the #5 position in the best deals for science games.
8.9
6,967
651
-65%
10.79€
3.85€
Free science games on Steam
Check out this fantastic list of free-to-play science games you can enjoy on Steam right now, updated on June 16th 2025. Looking for even more free titles? Use the search filters to explore a wider range of free to play science games.
1. Cell to Singularity - Evolution Never Ends
The epic story of evolution, technology, humanity, and dinosaurs is yours to tap. Cell to Singularity - Evolution Never Ends is a clicker, free to play and simulation game developed and published by Computer Lunch. Released on November 03rd 2021 has received 23,690 reviews of which 21,284 were positive and 2,406 were negative resulting in a rating of 8.8 out of 10. With 2,539 active players enjoying it for free, this strategy game has reached the #1 spot among the top free science games on Steam.
8.8
21,284
2,406
2,539
players