Whoever said you need deep pockets to blast off into the cosmos was totally lying. Some of the best sci-fi adventures won’t cost you a credit, be they galaxy-spanning RPGs or space-faring shootouts.
Here are the top free sci-fi games to send you hurtling through wormholes and dodging lasers—for free.
19. Limbus Company
PC, Android, iOS
Welcome to Limbus Company. You’re a morally flexible Manager of a team of damaged misfits, otherwise known as Sinners.
You’ll battle your way to golden treasures and clash with nightmarish foes in a (mostly) grimdark metropolis. Discover mysteries at every corner and try not to let your “unique” crew get themselves killed…yet again.
You’ll line up combos, chain skills, trigger twisted “Identities,” and throw your Sinners into unpredictable brawls. One wrong move might end in carnage. It’s as satisfying as it’s brutal, what with the sinister lore from the minds behind Lobotomy Corporation.
18. STAR WARS™: The Old Republic™
PC
Here, you drop into the galaxy set thousands of years before the movies with your own lightsaber, blaster, or just enough audacity to take on the Jedi or Sith Council. This MMO lets you forge your destiny as a Jedi, Sith, Bounty Hunter, or something in between.
There are eight unique storylines and sixteen combat styles. Every choice pulls you deeper into a galaxy of adventure (and a fair share of dark side temptations).
Fight side-by-side with friends in intense raids or, if you’d rather be soft–I mean, pacifist, you can build a Stronghold on Tatooine. f you're feeling a little daring, then try out combat styles that let you wield lightsabers in ways the Council probably wouldn’t approve of.
17. Halo Infinite
Xbox Series X/S, Xbox One, PC, GeForce Now
Suit up as Master Chief because the fate of humanity rests on your green armored shoulders. Ruthless enemies to confront, mysteries to unravel, what’s not to love? It's Halo, but bigger, bolder, turned up to eleven, and somehow even more explosive.
Free-to-play multiplayer means every firefight is a fresh adrenaline shot—dodging rockets, charging the hill, capturing flags, or facing wave after wave in Firefight mode.
Also, Forge is back with wild new tools. Slap in some campaign AI, or recreate iconic Halo moments just because you can.
16. Star Trek Online
PC, macOS, GeForce Now, PS4, Xbox 360, Xbox One
Command your own starship to explore a galaxy full of mysteries (some dangerous, some a little less so), beam down to alien worlds, face foes, form alliances, and probably hear a lot of Klingon swearing.
Decades after Star Trek: Nemesis, the galaxy is still full of familiar faces, old rivalries, and enough laser-blasting action to keep your phaser finger busy.
And get this—this isn’t your average space sim. You’ll juggle between epic ship battles that demand tactical brilliance and ground missions where you lead away teams through hostile terrain (and hopefully not a red-shirt slaughterfest).
Download: https://play.google.com/store/apps/details?id=com.stone3.ig
15. EVE Online
PC, macOS, GeForce Now
EVE Online is the self-professed ultimate space sandbox where you can pilot one of 350 unique starships, mine asteroids, explore hidden wormholes, build massive empires, and more. Try one of 350 unique starships and unleash chaos on thousands of other players.
You’re an immortal star captain with endless paths to power, fortune, or infamy. It’s “player-driven” taken to a new level: everything from trading on the market to leading the biggest space battles gaming has ever seen is completely shaped by players.
14. PlanetSide 2
GeForce Now, PS4, PC, Android
You’re one soldier in an army of hundreds. Explosions rock the battlefield while you and your empire fight across continents for control of precious resources.
In PlanetSide 2, you play a piece in a planet-wide war machine. Join one of three empires, each with different firepower, vehicles, and endless reasons to hate the others, and battle over sprawling maps that are all up for grabs.
There’s hundreds of weapons, vehicles, and classes ranging from stealthy snipers to jetpack-fueled fighters.
13. Destiny 2
PS5, PS4, Xbox One, Xbox Series X/S, PC, Google Stadia
Be a Guardian, a space warrior with powers and guns. You have a personal vendetta against anything threatening the solar system.
While exploring strange worlds, you unlock elemental abilities that feel like magic with attitude, collect gear that’s equal parts deadly and stylish, and become a legend of the stars. And trust us, you’ll look really cool doing it.
Join fireteams for epic raids and jump into frantic PvP modes.The explosions are frequent and friends (or rivals, or frienemies, for that matter) are everywhere.
12. Overwatch® 2
PC, PS4, PS5, Xbox One, Xbox Series X/S
Overwatch 2 is much like the first Overwatch. It throws you into colorful battles with a cast of 41 heroes with wildly unique powers and personalities.
Matches range from pushing payloads to all-out tug-of-war-style brawls. Overwatch 2 keeps you on your toes (or, more accurately, sliding, jumping, and sprinting). Choose from tanks, damage dealers, or healers, each with flashy moves and elemental effects.
Every match feels like a speedy puzzle—and the solution is usually explosions.
11. Valorant
PC, PS5. Xbox Series X/S. Android
Are you into 5v5 tactical showdowns where sharp reflexes and clever thinking are just as vital as firepower?
Your Agent with flashy abilities faces off in tense rounds where every move counts because every bullet might be your last (so make sure it’s your opponent's last).
VALORANT turns every match into a highlight reel—the game combines mind games with precise gunplay for heart-pounding moments.
10. Beneath a Steel Sky
PC, Amiga, Unix, MS-DOS, Classic Mac OS, iOS, Android
You’re Robert Foster now, get used to it. Robert is a survivor in a gritty dystopian world who just watched his home get torched, his people wiped out, and himself dragged into Union City. Now, his life under a fascist AI is…less than ideal.
Alongside your sarcastic AI buddy, Joey (not the bad guy, but freshly rebooted after a helicopter crash), you’ll unravel sinister secrets and hopefully make it out before the steel skies close in for good.
Beneath a Steel Sky delivers cyberpunk mystery, snappy dialogue, creepy AI, and all the sci-fi conspiracy you could want. It’s all wit, grit, and unforgettable storytelling.
9. Apex Legends™
PS5, PS4, Switch, Xbox Series X/S, Xbox One, GeForce Now, Android, iOS
The Apex Games are a total chaos, but in a good way. Teams of Legends with over-the-top abilities battle it out for fortune and bragging rightson the edges of the Frontier.
Choose a Legend and join a squad to unleash tactical mayhem and claim victory—if you can survive the onslaught.
Each Legend brings personality and game-changing powers, so every match is a chance to discover crazy combos and pull off stunts that’ll make you look like a total legend.
8. Pixel Starships
PC, macOS, Android, iOS
In this 8-bit galaxy, players like you are the architects, engineers, strategists, and everything in between. Recruit bizarre alien crew members and set off on missions through a massive online universe. Exploration and epic battles are all a day's work.
You’ll be micromanaging power systems and programming the ship’s AI among many other tasks that make you feel like you’re really there, ruling over your own space ship. What’s not to love? And all that to handle combat when you’re offline,
Pixel Starships is like playing god in a retro space opera.
7. Alien Swarm
PC
Look down because this is a top-down, co-op bug-blasting frenzy where you and three friends form a team of IAF Marines to cleanse an alien-infested off-world colony.
There’s every biome you can imagine here—icy wastelands, lava-flooded mines, dark, creepy tunnels, and some greenery thrown in the mix. You’ll blast (with a plan, not mindlessly) and hopefully survive against relentless swarms of alien nasties.
Unlockable gear, classes full of personality, and endless loadout keep you busy (and aliens off your face). If you haven’t had enough, there are also full mod tools.
6. Endless Sky
PC, macOS
Endless Sky lets you start small and grow big. From a lone pilot in a humble little ship to galactic fame (or infamy), if you dare to haul cargo, hunt bounties, explore the great unknown, and fight epic space battles.
What’s more, there’s over fifty ships and hundreds of upgrades, regardless of if you like to go all guns glazing or live out a space tycoon fantasy (we know you have those).
Plus, it’s open-source, so the galaxy is growing non-stop—there’s always something new to discover or blow up.
5. Burning Daylight
PC
You wake up stark naked in a horrifying slaughterhouse, clueless but for a strange tattoo on your chest. OK, that sounds horrible but hear us out.
Armed with nothing but your wits (and desperately needing pants), you wander through a haunting megastructure filled with slums and a grim society full of secrets surviving in the outside world’s shadow.
Yes, it’s a sci-fi fever dream with dystopian grit, strange puzzles, and the thrill of piecing together your own twisted origin story.
4. SOF: Enemy from the Future
PC
You thought alien invasions only happen in New York? Oh no! Lead a squad of Russian Special Forces against parallel-universe aliens who brought their bad vibes, weird weather, and a side of geomagnetic chaos.
With disappearances piling up and humanity’s fate on the line, your mission is simple: outwit the invaders and make them regret messing with the wrong timeline.
Tactics meet adrenaline—you micromanage every headshot, hostage rescue, and alien takedown. Every battle feels like a nail-biting chess match…with laser rifles.
3. SCP: Secret Laboratory
PC, GeForce Now
There’s an SCP among us. The term “hostile work environment” doesn’t even begin to describe this. You’re stuck in the middle of a containment breach gone horribly wrong.
Dodging Tesla Gates, avoiding SCP creatures with a vendetta, trying not to get shot by “allies,” you’ll do it all. Survival is your only goal—unless, of course, you’re the one doing the hunting.
Play as a panicked D-Class, a nervous Scientist clutching a keycard, an eldritch SCP looking for lunch (hint: it’s the players), and you’ve got a game that’s one part survival horror, one part trust issues.
2. Portal Reloaded
PC, macOS
Didn’t have enough sci-fi games where you wake up and have no idea what’s going on? Lucky you, Portal is back. You are Test Subject [4-5-0-9], groggily awoken from stasis by an AI probably just as lonely as it is condescending.
You’ll face puzzles that stretch your mind across space and time—literally—with the revolutionary Triple Portal Device. One moment you’re solving puzzles in the present, the next, you’re stepping through 20 years into a post-apocalyptic IKEA of test chambers.
Portal Reloaded doesn’t merely make you think outside the box—it hands you a third box, sets it on fire, and tells you to solve everything backwards.
1. Warframe
PC, PS4, PS5, Switch, Xbox One, Xbox Series X/S
Suit up in a living, metal exoskeleton that can slice, dice, and explode.
Guided by a cryptic space mom (aka the Lotus), you’ll parkour through vast worlds, unleash unholy levels of destruction, planet-hop across the solar system, and uncover the secrets of a universe teetering on the brink of war.
Warframe lets you be a space ninja (sort of) with style. You’re flipping through enemy gunfire or detonating a battlefield with weapons that are equal parts deadly and ridiculous, with over 40 Warframes and open-world zones full of weird alien wildlife.
