Games like X3: Reunion on Steam
For those who prefer not to search, lists of the most played, top deals and best free games like X3: Reunion are available at the bottom of the page.
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Avorion
A procedural co-op space sandbox where players can build their own space ships out of dynamically scalable blocks. Fight epic space battles, explore, mine, trade, wage wars and build your own empire to save your galaxy from being torn apart by an unknown enemy.
United Penguin Kingdom
A city-building game where you build a penguin settlement and satisfy the various needs of your penguins while dealing with seals and killer whales. Enjoy the growth of your settlement, become the king, and lead the United Penguin Kingdom.
Interstellar Transport Company
Build a galactic transportation empire and supply humanity with everything it needs to colonize the stars. In this sci-fi logistics simulator, grow your company from a local transport agency into an interstellar logistics behemoth! Singleplayer, vs AI, and online multiplayer.
The Spatials
It's the year 5781 -- and you have been chosen to build and lead a space station in a wild corner of the galaxy! Attract visitors and explore hundreds of planets to fund your station.
Celestial Command
Mine asteroids, salvage space debris, design your own small or massive spacecraft using individual functional components, complete missions, and engage in battles against enemies in a vast galaxy with realistic physics based on orbital mechanics or in a classic physics mode.
Sins of a Solar Empire®: Rebellion
Command a space-faring empire in Sins of a Solar Empire: Rebellion, the new stand-alone expansion that combines 4X depth with real-time strategy gameplay.
The Last Starship
The Last Starship is a 2D space construction game where you design and upgrade your starship. Choose your path: pirate hunter, miner, engineer, spacebus driver, and more, whilst exploring vibrant star systems. Enjoy a growing sandbox world, with regular free updates. Your cosmic adventure awaits!
Starmancer
From a small 2-man team comes a unique space station management sim. Take on the role of an A.I commanding a lost space ark. Try not to let your crew run amok and wreck the place.
Space Engineers 2
The ultimate space sandbox, reimagined. Unleash your creativity with powerful building tools, explore the mysterious Almagest system, and uncover its captivating story. Join the Early Access and shape the future of space engineering!
Flight Of Nova
Flight of Nova is a simulator based on newtonian mechanics in which you control spacecraft in the Noren star system. You fly multiple types of spacecraft doing transport and search missions in an environment with realistic aerodynamics and orbital physics.
Reassembly
A spaceship building and universe-exploration game. Collect resources, expand and grow your fleet, and conquer your personal galaxy. Stellar ambience by Peaks.
Space Pirates And Zombies 2
Design and then improve the ultimate mothership. Explore a persistent living galaxy populated by 200 unique captains that can do everything you can do. Survive the zombie infection and then fight them back. Make allies and start your own faction. Build your empire. Also includes Sandbox Mode.
Evochron Mercenary
The life of an independent mercenary is rarely without excitement. Your spacecraft awaits and your adventure begins in the Sapphire star system.
SPORE™ Galactic Adventures
Take Your Creature From Zero To Galactic HeroGet out of your starship and turn your Spore creatures into legendary Space Captains. For the first time, beam down with your allies to take on action-packed, planetside adventures. Complete quests, collect rewards, and even create your own missions.
SPORE™ Creepy & Cute Parts Pack
Add horror and humor to your universe. Make grotesque beasts or cuddly critters, then watch them do the robot, zombie walk, break dance and more! Includes over 100 new items. 60 New parts 48 New paint options 24 New animations
Space Trash Scavenger
Grab your jetpack and explore procedural asteroid fields, derelict spaceships and abandoned outposts. Build and automate your Space Rig to process scavenged trash. Craft, trade and fight your way home in this interstellar, open-world survival sandbox.
STAR WARS™: Squadrons
Master the art of starfighter combat in the authentic piloting experience STAR WARS™: Squadrons. Feel the adrenaline of first-person multiplayer space dogfights alongside your squadron, and buckle up in a thrilling STAR WARS™ story.
ΔV: Rings of Saturn
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.
Children of a Dead Earth
The most scientifically accurate space warfare simulator ever made. Now with Steam Workshop!
3030 Deathwar Redux - A Space Odyssey
3030 Deathwar is a unique mix of Adventure and Space Sim. Explore star systems, mine and hunt pirates in top-down mode. Leave your ship and switch into classic Adventuring mode, where you explore derelicts, talk to shady characters or head over to the space bar for a drink.
House of the Dying Sun
House of the Dying Sun is a tactical space shooter that puts you in the cockpit of the universe's most terrifying starfighter. Hunt the enemies of the Empire and bring ruin to their people.
No Man's Sky
No Man's Sky is a game about exploration and survival in an infinite procedurally generated universe.
Wayward Terran Frontier: Zero Falls
2d space combat like no other. From the perspective of a single crew member, explore the fully destructible interior of any ship in a massive living world. Engage in space combat with no hitpoints where you know your enemy is dead when you see them fall out of their ship into the cold dark of space.Most played games like X3: Reunion on Steam
Take a look at the top games like X3: Reunion that are currently attracting the largest player bases on the Steam platform, as of April 18th 2025.
1. RimWorld
Similarity 68% A sci-fi colony sim driven by an intelligent AI storyteller. Generates stories by simulating psychology, ecology, gunplay, melee combat, climate, biomes, diplomacy, interpersonal relationships, art, medicine, trade, and more. RimWorld is a colony sim, base-building and survival game developed and published by Ludeon Studios. Released on October 17th 2018 has received 207,748 reviews of which 203,531 were positive and 4,217 were negative resulting in an impressive rating of 9.7 out of 10. The game has hit the top spot as the #1 most played game like X3: Reunion, thanks to its 20,263 peak concurrent players over the last day.
9.7
203,531
4,217
20,263
players
2. Stellaris
Similarity 65% Explore a galaxy full of wonders in this sci-fi grand strategy game from Paradox Development Studios. Interact with diverse alien races, discover strange new worlds with unexpected events and expand the reach of your empire. Each new adventure holds almost limitless possibilities. Stellaris is a space, grand strategy and strategy game developed by Paradox Development Studio and published by Paradox Interactive. Released on May 09th 2016 has received 181,916 reviews of which 157,721 were positive and 24,195 were negative resulting in a rating of 8.6 out of 10. While seeing 11,232 players online at once in the last 24 hours, this game is currently ranked #2 among games like X3: Reunion based on player count.
8.6
157,721
24,195
11,232
players
3. No Man's Sky
Similarity 72% No Man's Sky is a game about exploration and survival in an infinite procedurally generated universe. No Man's Sky is a open world, open world survival craft and space game developed and published by Hello Games. Released on August 12th 2016 has received 349,909 reviews of which 290,482 were positive and 59,427 were negative resulting in a rating of 8.2 out of 10. While seeing 8,207 players online at once in the last 24 hours, this game is currently ranked #3 among games like X3: Reunion based on player count.
8.2
290,482
59,427
8,207
players
4. Elite Dangerous
Similarity 87% Take control of your own starship in a cutthroat galaxy. Elite Dangerous is the definitive massively multiplayer space epic. Elite Dangerous is a space sim, space and open world game developed and published by Frontier Developments. Released on April 02nd 2015 has received 98,919 reviews of which 76,509 were positive and 22,410 were negative resulting in a rating of 7.7 out of 10. With 6,636 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like X3: Reunion.
7.7
76,509
22,410
6,636
players
5. Oxygen Not Included
Similarity 80% Oxygen Not Included is a space-colony simulation game. Deep inside an alien space rock your industrious crew will need to master science, overcome strange new lifeforms, and harness incredible space tech to survive, and possibly, thrive. Oxygen Not Included is a colony sim, base-building and survival game developed and published by Klei Entertainment. Released on July 30th 2019 has received 127,145 reviews of which 123,019 were positive and 4,126 were negative resulting in an impressive rating of 9.5 out of 10. With 4,899 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played games like X3: Reunion.
9.5
123,019
4,126
4,899
players
6. X4: Foundations
Similarity 86% X4: FOUNDATIONS brings our most sophisticated universe SIMULATION ever. Fly every ship, EXPLORE space or manage an empire; TRADE, FIGHT, BUILD and THINK carefully, while you embark on an epic journey. Experience tons of improvements with the massive 7.50 Update! X4: Foundations is a space sim, simulation and sandbox game developed and published by Egosoft. Released on November 30th 2018 has received 23,304 reviews of which 18,494 were positive and 4,810 were negative resulting in a rating of 7.8 out of 10. With 3,668 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played games like X3: Reunion.
7.8
18,494
4,810
3,668
players
7. Space Engineers
Similarity 71% Space Engineers is a sandbox game about engineering, construction, exploration and survival in space and on planets. Players build space ships, space stations, planetary outposts of various sizes and uses, pilot ships and travel through space to explore planets and gather resources to survive. Space Engineers is a space, sandbox and building game developed and published by Keen Software House. Released on February 28th 2019 has received 131,727 reviews of which 116,631 were positive and 15,096 were negative resulting in a rating of 8.7 out of 10. With 3,569 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played games like X3: Reunion.
8.7
116,631
15,096
3,569
players
8. EVE Online
Similarity 62% EVE Online is a free-to-play community driven space MMO where players can choose their own path from countless different options. Experience space exploration, immense PvP and PvE battles, mining, industry and a thriving player economy in an ever-expanding sandbox. EVE Online is a space, free to play and open world game developed and published by CCP. Released on December 15th 2010 has received 35,998 reviews of which 26,538 were positive and 9,460 were negative resulting in a rating of 7.3 out of 10. With 3,511 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played games like X3: Reunion.
7.3
26,538
9,460
3,511
players
9. Cell to Singularity - Evolution Never Ends
Similarity 62% 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 23,288 reviews of which 20,937 were positive and 2,351 were negative resulting in a rating of 8.8 out of 10. With 2,817 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played games like X3: Reunion.
8.8
20,937
2,351
2,817
players
10. Kerbal Space Program
Similarity 80% 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 126,215 reviews of which 120,127 were positive and 6,088 were negative resulting in an impressive rating of 9.4 out of 10. With 2,413 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played games like X3: Reunion.
9.4
120,127
6,088
2,413
players
Best deals on games like X3: Reunion on Steam
Discover fantastic savings with the best discounts on a variety of games like X3: Reunion available on Steam right now, updated on April 18th 2025. Looking for even more deals? Use the search filters to explore a wider range of discounted games like X3: Reunion.
1. InfraSpace
Similarity 70% Create an extrasolar efficiency utopia from scratch! In this sci-fi city builder you need to start mining operations, plan production, and lay down transportation routes to ensure a smooth supply chain. InfraSpace is a city builder, automation and transportation game developed and published by Dionic Software. Released on September 22nd 2023 has received 1,611 reviews of which 1,297 were positive and 314 were negative resulting in a rating of 7.7 out of 10. Featuring a massive 95% discount, this game currently holds the #1 spot in the best deals for games like X3: Reunion.
7.7
1,297
314
-95%
20.00€
1.00€
2. Distant Worlds: Universe
Similarity 63% Distant Worlds is a vast, pausable real-time 4X space strategy game. Experience the full depth and detail of turn-based strategy, but with the simplicity and ease of real-time, and on the scale of a massively-multiplayer online game. Distant Worlds: Universe is a strategy, 4x and space game developed by Code Force and published by Slitherine Ltd.. Released on May 23rd 2014 has received 1,815 reviews of which 1,375 were positive and 440 were negative resulting in a rating of 7.3 out of 10. Thanks to its incredible 92% discount, this game is now the #2 best deal in games like X3: Reunion.
7.3
1,375
440
-92%
28.00€
2.24€
3. Shortest Trip to Earth
Similarity 66% Shortest Trip to Earth is a roguelike spaceship simulator focused on exploration, ship management and tactical battles. Embark on a perilous journey across the universe with nuclear missiles, armed crew and a cat. Shortest Trip to Earth is a rogue-lite, space and strategy game developed by Interactive Fate and published by Interactive Fate and Iceberg Interactive. Released on August 15th 2019 has received 1,385 reviews of which 1,067 were positive and 318 were negative resulting in a rating of 7.4 out of 10. Thanks to its incredible 91% discount, this game is now the #3 best deal in games like X3: Reunion.
7.4
1,067
318
-91%
23.78€
2.14€
4. Space Crew: Legendary Edition
Similarity 68% Time for your toughest mission yet! Recruit and train your crew to tackle the growing threat from alien and android armies as you defend Earth to become a Galactic Legend in Space Crew: Legendary Edition. All new content free to existing owners of Space Crew! Space Crew: Legendary Edition is a action, sci-fi and adventure game developed by Runner Duck and published by Curve Games. Released on October 15th 2020 has received 2,841 reviews of which 2,142 were positive and 699 were negative resulting in a rating of 7.3 out of 10. Currently offered at a significant 91% discount, this title has earned the #4 position in the best deals for games like X3: Reunion.
7.3
2,142
699
-91%
16.56€
1.49€
5. VoidExpanse
Similarity 71% Explore the vast reaches of VoidExpanse -- mine asteroids, upgrade your ship, trade, complete missions, advance your character and survive fast-paced combat with hostile aliens and mercenaries in the rich and exciting Sci-Fi universe of VoidExpanse! VoidExpanse is a space, rpg and open world game developed and published by AtomicTorch Studio. Released on April 02nd 2015 has received 747 reviews of which 534 were positive and 213 were negative resulting in a rating of 6.9 out of 10. Currently offered at a significant 91% discount, this title has earned the #5 position in the best deals for games like X3: Reunion.
6.9
534
213
-91%
15.11€
1.36€
6. Space Rangers HD: A War Apart
Similarity 71% Space adventure, open world RPG, strategy, arcade, quest and more! Space Rangers HD: A War Apart is a space, rpg and strategy game developed by SNK Games, Elemental Games and Katauri Interactive and published by Fulqrum Publishing. Released on October 17th 2013 has received 6,610 reviews of which 6,242 were positive and 368 were negative resulting in an impressive rating of 9.1 out of 10. Currently offered at a significant 90% discount, this title has earned the #6 position in the best deals for games like X3: Reunion.
9.1
6,242
368
-90%
15.30€
1.53€
7. Hardspace: Shipbreaker
Similarity 82% Equipped with cutting-edge salvaging tech, carve & slice spaceships to recover valuable materials. Upgrade your gear to take on more lucrative contracts and pay your billion credits debt to LYNX Corp! Hardspace: Shipbreaker is a space, sci-fi and simulation game developed by Blackbird Interactive and published by Focus Entertainment. Released on May 24th 2022 has received 20,217 reviews of which 18,089 were positive and 2,128 were negative resulting in a rating of 8.8 out of 10. Currently offered at a significant 89% discount, this title has earned the #7 position in the best deals for games like X3: Reunion.
8.8
18,089
2,128
-89%
36.18€
3.98€
8. Breathedge
Similarity 62% Survive in outer space! Together with your immortal chicken, discover the truth behind your sudden spaceship crash. Craft tools, pilot vehicles, and even control space stations to survive and explore the wreckage. Breathedge is a open world survival craft, space and singleplayer game developed by RedRuins Softworks and published by RedRuins Softworks and HypeTrain Digital. Released on February 25th 2021 has received 15,152 reviews of which 12,488 were positive and 2,664 were negative resulting in a rating of 8.1 out of 10. Currently offered at a significant 88% discount, this title has earned the #8 position in the best deals for games like X3: Reunion.
8.1
12,488
2,664
-88%
24.42€
2.93€
9. Jurassic World Evolution
Similarity 66% Place yourself at the heart of the Jurassic franchise and build your own Jurassic World. Bioengineer dinosaurs that think, feel and react intelligently to the world around them and face threats posed by espionage, breakouts and devastating tropical storms in an uncertain world where life always finds a way. Jurassic World Evolution is a building, dinosaurs and simulation game developed and published by Frontier Developments. Released on June 11th 2018 has received 53,766 reviews of which 46,902 were positive and 6,864 were negative resulting in a rating of 8.6 out of 10. Currently offered at a significant 87% discount, this title has earned the #9 position in the best deals for games like X3: Reunion.
8.6
46,902
6,864
-87%
44.15€
5.74€
10. Jurassic World Evolution 2
Similarity 66% Jurassic World Evolution 2 is the much-anticipated sequel to Frontier’s highly successful Jurassic World Evolution. This bold new era in the Jurassic World Evolution game franchise builds upon the ground-breaking and immersive 2018 management simulation. Jurassic World Evolution 2 is a dinosaurs, building and simulation game developed and published by Frontier Developments. Released on November 09th 2021 has received 35,546 reviews of which 31,755 were positive and 3,791 were negative resulting in a rating of 8.8 out of 10. Currently offered at a significant 84% discount, this title has earned the #10 position in the best deals for games like X3: Reunion.
8.8
31,755
3,791
-84%
61.69€
9.87€
Free games like X3: Reunion on Steam
Check out this fantastic list of free-to-play games like X3: Reunion you can enjoy on Steam right now, updated on April 18th 2025. Looking for even more free titles? Use the search filters to explore a wider range of free to play games like X3: Reunion.
1. EVE Online
Similarity 62% EVE Online is a free-to-play community driven space MMO where players can choose their own path from countless different options. Experience space exploration, immense PvP and PvE battles, mining, industry and a thriving player economy in an ever-expanding sandbox. EVE Online is a space, free to play and open world game developed and published by CCP. Released on December 15th 2010 has received 35,998 reviews of which 26,538 were positive and 9,460 were negative resulting in a rating of 7.3 out of 10. With 3,511 active players enjoying it for free, this strategy game has reached the #1 spot among the top free games like X3: Reunion.
7.3
26,538
9,460
3,511
players
2. Cell to Singularity - Evolution Never Ends
Similarity 62% 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 23,288 reviews of which 20,937 were positive and 2,351 were negative resulting in a rating of 8.8 out of 10. Thanks to its free to play tag and a daily player base of 2,817, this game has secured the #2 spot in the ranking of free games like X3: Reunion.
8.8
20,937
2,351
2,817
players
3. Endless Sky
Similarity 94% Endless Sky is a 2D space trading and combat game inspired by the classic Escape Velocity series. Work your way up from a relatively wimpy shuttle, cargo ship, or fighter, to a highly upgraded and customized flagship or to a massive fleet of warships or freighters. Endless Sky is a space, free to play and open world game developed and published by Michael Zahniser. Released on October 30th 2015 has received 6,579 reviews of which 6,074 were positive and 505 were negative resulting in a rating of 8.9 out of 10. Thanks to its free to play tag and a daily player base of 111, this game has secured the #3 spot in the ranking of free games like X3: Reunion.
8.9
6,074
505
111
players
4. Prosperous Universe
Similarity 82% In Prosperous Universe start your galactic empire by trading on the real-time market exchange with other real players. Build your 1st base from humble beginnings & watch as your business flourishes with complex supply chain strategies. Economics, politics & realism fuel this immersive business MMO. Prosperous Universe is a early access, economy and resource management game developed and published by simulogics. Released on April 20th 2022 has received 883 reviews of which 665 were positive and 218 were negative resulting in a rating of 7.2 out of 10. The game currently holds the #4 spot among the most played free games like X3: Reunion.
7.2
665
218
36
players
5. Planet S
Similarity 59% Planet S is a real-time strategy game where your goal is to colonize multiple planets in a solar system to advance your civilization, build a city and supply it to grow your faction. Planet S is a strategy, city builder and multiplayer game developed and published by Glimmerlight Games. Released on October 28th 2023 has received 2,565 reviews of which 2,352 were positive and 213 were negative resulting in a rating of 8.8 out of 10. The game currently holds the #5 spot among the most played free games like X3: Reunion.
8.8
2,352
213
24
players
6. Kepler-2100
Similarity 64% Kepler-2100 is a space fantasy strategy war game Kepler-2100 is a strategy, space and 3d platformer game developed and published by NCARD. Released on September 24th 2024 has received 423 reviews of which 342 were positive and 81 were negative resulting in a rating of 7.6 out of 10. The game currently holds the #6 spot among the most played free games like X3: Reunion.
7.6
342
81
9
players