Why it made the list: The biggest space MMO on your phone.
EVE Echoes is well suited for those who want to feel not just flying in space, but a whole living universe with an economy, corporations, ships and long-term growth. This is not a game for five minutes, but it gives you the very scale of the galaxy for which many are looking for mobile sci-fi.
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What to keep in mind: the entry threshold is noticeably higher than that of conventional mobile games, best suited for those who are ready to understand systems
Platforms: iPhone, iPad, Android. App Store · Google Play
Price, offline and ratings: free with in-app purchases; online only. Honest note: the ratings are low — 3.8 on Google Play and 3.4 on the App Store — with players complaining about monetisation and balance, so it is a pick for the patient.
Why it made the list: A classic sci-fi action game and still one of the best mobile space games.
Galaxy on Fire 2 HD has long become a mobile classic thanks to its good balance between flights, battles, missions and the feeling of your own ship in a vast universe. This is a great option if you want a space adventure, and not just a menu and leveling up.
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What to keep in mind: the game feels like a classic, not a cutting-edge service, those looking for big online may miss the lively social meta
Platforms: iPhone, iPad, Android. App Store · Google Play
Price, offline and ratings: free to start, the full campaign and add-ons are in-app purchases; works offline. Rated 4.2 on Google Play and 4.7 on the App Store. The Android version has not been updated since 2018 — check that it runs on your phone before buying the add-ons.
Why it made the list: Best mobile option for those who love rockets, orbits and space engineering.
Spaceflight Simulator reveals a different side to space: not through combat and story, but through rocket assembly, launch, orbital mechanics and constant attempts to make flight better. This is one of the most interesting sci-fi games on your phone if you like the engineering aspect of space.
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What to keep in mind: the game is about simulation, not about constant action, part of the fun comes from a love of fine tuning
Platforms: iPhone, iPad, Android. App Store · Google Play
Price, offline and ratings: free with in-app purchases for extra parts and planets; works offline. Rated 4.8 on Google Play (10M+ downloads) and 4.8 on the App Store — the best ratings on this list.
Why it made the list: Best tactical sci-fi action game on mobile.
Space Marshals 2 stands out because it works not like a space game, but like a very solid top-down tactical sci-fi action game. Positioning, careful combat and the feel of a dangerous frontier environment make it one of the most stylish space games on your phone.
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What to keep in mind: it's more of a tactical action game than a classic space simulator, the pace here is more careful than in pure shooters
Platforms: iPhone, iPad, Android. App Store · Google Play
Price, offline and ratings: free with in-app purchases on Google Play, $4.99 on the App Store; works offline. Rated 3.9 on Google Play and 4.8 on the App Store. It has not been updated for a while, but the game is complete.
Why it made the list: Best space role-playing game for those who want to live the life of a captain.
Star Traders: Frontiers is well suited for those who need space through role-playing freedom: ship, crew, contracts, battles, trade and the constant feeling that you choose the fate of your crew. This is one of the most intense space RPG experiences on a phone.
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What to keep in mind: the game loves thoughtful players, the entrance is less friendly than more direct action projects
Platforms: iPhone, iPad, Android. App Store · Google Play
Price, offline and ratings: $6.99 on both stores, no ads or in-app purchases; works offline. Rated 4.5 on Google Play and 4.6 on the App Store, and Trese Brothers still update it — the latest patch landed in September 2026.
Why it made the list: The most fun space online strategy on a phone: you build a ship room by room and watch your pixel crew put out fires and fire back.
Pixel Starships is a ship manager and an MMO at once. You lay out cabins, reactors and weapons, hire a crew, and then the battle plays out on its own while you give orders. The game has been running since 2016, gets monthly updates and has a big, friendly community.
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What to keep in mind: online only, and late-game progress speeds up noticeably with purchases.
Platforms: iPhone, iPad, Android. App Store · Google Play
Price, offline and ratings: free with ads and in-app purchases; online only. Rated 4.5 on Google Play and 4.7 on the App Store.
Why it made the list: A warship construction kit: you assemble a ship from modules and send it into automatic battles against other players' designs.
In Space Arena the whole game is in the blueprint. Where you put shields, how you protect the reactor and where the engines go decides whether your ship survives a fight you do not control. Short matches, dozens of hulls and modules, and a constant urge to rebuild and try again.
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What to keep in mind: online only, and new modules unlock slowly without paying.
Platforms: iPhone, iPad, Android. App Store · Google Play
Price, offline and ratings: free with ads and in-app purchases; online only. Rated 4.5 on Google Play (5M+ downloads) and 4.7 on the App Store.
Why it made the list: An indie space RPG that works fully offline: explore the galaxy, collect a fleet and fight real-time top-down battles.
Event Horizon feels like the old PC space roguelikes: hundreds of star systems, dozens of factions, ships and modules, and battles where dodging and picking your range matter. The graphics are simple, but there are dozens of hours of content, all free and offline — a perfect travel game.
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What to keep in mind: the interface and art look homemade, and the App Store version is listed as Cosmic Horizons: Space RPG.
Platforms: iPhone, iPad, Android. App Store · Google Play
Price, offline and ratings: free with ads and in-app purchases; works offline. Rated 4.2 on Google Play (1M+ downloads) and 4.2 on the App Store.
Why it made the list: The only game here where you do not fight — you turn a dead planet into a living one, using real NASA data on Mars, Venus and the moons.
In TerraGenesis you pick a planet, build colonies and change its atmosphere, temperature and water step by step until life appears on the surface. It is calm, almost meditative, and quietly teaches why terraforming takes so long. Works offline, and progress continues while the app is closed.
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What to keep in mind: it is an idle game with timers — part of the fun is waiting — and some planets are paid.
Platforms: iPhone, iPad, Android. App Store · Google Play
Price, offline and ratings: free with ads and in-app purchases; works offline. Rated 4.2 on Google Play (10M+ downloads) and 4.6 on the App Store.
Why it made the list: A classic space arcade in the spirit of Space Invaders and Galaga — the most-played space game on phones and the best way to unwind after the serious sims.
Galaxy Attack is a vertical shooter: you steer the ship with one finger, dodge waves of aliens, collect upgrades and take down bosses half the size of the screen. Hundreds of levels, a PvP mode and daily events, and everything works offline on any phone.
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What to keep in mind: ads between levels, and the strongest ships are paid — late levels take longer without them.
Platforms: iPhone, iPad, Android. App Store · Google Play
Price, offline and ratings: free with ads and in-app purchases; works offline. Rated 4.6 on Google Play (100M+ downloads) and 4.7 on the App Store.
If you want to build and launch, get Spaceflight Simulator: it has the best ratings on the list and it is free.
If you want a big living universe with other players, start with Pixel Starships — it is simpler and friendlier. EVE Echoes is bigger, but be ready for complex systems and divisive monetisation.
For a single-player adventure with your own ship, choose Star Traders: Frontiers (paid, no purchases) or the free Event Horizon; the classic Galaxy on Fire 2 HD is still alive but long unpatched.
If space means planets and science to you rather than battles, TerraGenesis is the right pick. And for five minutes in a queue there is Galaxy Attack.
EVE Echoes — one shared galaxy for thousands of players with corporations and a living economy. But mind the low ratings (3.4–3.8): many players find it too complex and expensive. For scale without the pain, try Pixel Starships or Star Traders: Frontiers with its hundreds of systems.
Yes, and they are the majority: Spaceflight Simulator, Star Traders: Frontiers, Event Horizon, TerraGenesis, Galaxy on Fire 2 HD, Space Marshals 2 and Galaxy Attack all work offline. Only EVE Echoes, Pixel Starships and Space Arena need a connection.
Spaceflight Simulator for rockets and orbits, TerraGenesis for planets and colonies, Space Arena for designing warships. All three are free.
Eight of the ten are free to install. Star Traders: Frontiers ($6.99) is the one worth buying outright — no ads, no purchases, years of updates — and Space Marshals 2 on iPhone ($4.99) is a complete premium game too.
Star Traders: Frontiers — pay once and nothing else is sold. Space Marshals 2 on iPhone is sold whole as well. Among the free games, Spaceflight Simulator is the fairest: its purchases are extra parts and planets, not progress boosts.
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