Check out this fantastic list of free-to-play space games you can enjoy on Steam right now, updated on May 14th 2026. Looking for even more free titles? Explore the complete list of the best free to play space games on Steam.
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1. Unnamed Space Idle
Destroy endless waves of alien ships that have all but wiped out humanity in this long form, unfolding, sci-fi idle game. Customize your ship with different weapons and defenses to defeat specific enemy types and utilize a ton of different systems to increase your overall power. Unnamed Space Idle is a idler, casual and simulation game. Released on July 27th 2023 has received 4,087 reviews of which 3,793 were positive and 294 were negative resulting in a rating of 8.9 out of 10. The game has hit the top spot as the #1 most played space game, thanks to its 4,557 peak concurrent players over the last day.
8.9
3,793
294
4,557
players
2. EVE Online
Over 20 years of legendary space battles! Explore a massive living universe of danger and opportunity in a challenging and highly rewarding space adventure. Fight, trade, build, and connect with a universe driven and shaped directly by players. EVE Online is a space, massively multiplayer and open world game. Released on December 15th 2010 has received 36,388 reviews of which 26,813 were positive and 9,575 were negative resulting in a rating of 7.3 out of 10. While seeing 3,959 players online at once in the last 24 hours, this game is currently ranked #2 among space games based on player count.
7.3
26,813
9,575
3,959
players
3. Star Trek Online
In Star Trek Online, the Star Trek universe appears for the first time on a truly massive scale. Players take the captain's chair as they command their own starship and crew. Explore strange new worlds, seek out new life and new civilizations, and boldly go where no one has gone before. Star Trek Online is a sci-fi, massively multiplayer and space game. Released on January 31st 2012 has received 20,145 reviews of which 15,939 were positive and 4,206 were negative resulting in a rating of 7.8 out of 10. While seeing 1,168 players online at once in the last 24 hours, this game is currently ranked #3 among space games based on player count.
7.8
15,939
4,206
1,168
players
4. Galaxy Idle Clicker
Embark on an interstellar journey with Galaxy Idle Clicker! Conquer galaxies, upgrade your spaceship, and face off against a myriad of enemy ships. With engaging minigames, powerful upgrades, GIC delivers an unparalleled idle space adventure. Join the cosmic conquest today and dominate the universe! Galaxy Idle Clicker is a indie, idler and clicker game. Released on August 06th 2025 has received 1,150 reviews of which 864 were positive and 286 were negative resulting in a rating of 7.2 out of 10. With 792 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played space games.
7.2
864
286
792
players
5. Super Sus
Welcome to join the multiplayer social deduction game - Super Sus! Engage in intense gameplay with global players, as you strategize to safeguard your spaceship from the cunning Impostors determined to sabotage the mission and eliminate everyone aboard! Super Sus is a multiplayer, online co-op and social deduction game. Released on July 30th 2024 has received 2,580 reviews of which 1,817 were positive and 763 were negative resulting in a rating of 6.9 out of 10. With 196 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played space games.
6.9
1,817
763
196
players
6. Star Trek Timelines
Explore the Final Frontier in the ultimate sci-fi strategy RPG, Star Trek Timelines! Join Starfleet and overcome challenges as you boldly go where no game has gone before – across the entire history of Star Trek. Star Trek Timelines is a strategy, space and adventure game. Released on July 12th 2017 has received 1,430 reviews of which 938 were positive and 492 were negative resulting in a rating of 6.4 out of 10. With 147 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played space games.
6.4
938
492
147
players
7. Endless Sky
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, open world and singleplayer game. Released on October 30th 2015 has received 6,651 reviews of which 6,141 were positive and 510 were negative resulting in a rating of 8.9 out of 10. With 117 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played space games.
8.9
6,141
510
117
players
8. Hades' Star
A unique space strategy game where thousands of players participate in one shared galaxy. Hades' Star is a space, strategy and massively multiplayer game. Released on February 27th 2019 has received 2,577 reviews of which 1,874 were positive and 703 were negative resulting in a rating of 7.1 out of 10. The game currently holds the #8 spot among the most played space games.
7.1
1,874
703
99
players
9. Pixel Starships
Pixel Starships is an FTL-style online sci-fi strategy builder and management game with a competitive PVP tournament. Set in the retro galaxy, your role is to explore space, meet aliens, and develop your ship, crew and AI. The game contains deep strategic and 4x elements. PSS is community-driven. Pixel Starships is a sci-fi, space and strategy game. Released on May 23rd 2023 has received 2,732 reviews of which 2,008 were positive and 724 were negative resulting in a rating of 7.1 out of 10. The game currently holds the #9 spot among the most played space games.
7.1
2,008
724
80
players
10. Planet S
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. Released on October 28th 2023 has received 2,846 reviews of which 2,607 were positive and 239 were negative resulting in a rating of 8.8 out of 10. The game currently holds the #10 spot among the most played space games.
8.8
2,607
239
19
players
More Space & Related Games
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