Best Sci-Fi Games on Mobile in 2026: Free, Offline, and Paid
The best sci-fi game on mobile in 2026 is Into the Breach if you have Netflix. It is included with an active membership, has no ads and no in-app purchases, and Netflix’s own support page says it can be played offline. If you would rather buy a game once, XCOM 2 Collection is $14.99 on Google Play and the US App Store, with no ads and no extra packs to buy. If you want a game that is free on Android with nothing to purchase, Mindustry is the pick: no ads, no in-app purchases, and Google Play marks it as playable offline.
What is the best sci-fi game if you do not have Netflix? Buy XCOM 2 Collection, or install Mindustry for free. Which sci-fi games work offline? Google Play’s official Offline label is on XCOM 2, Alien: Isolation, Mindustry, Spaceflight Simulator, Juno: New Origins, Fallout Shelter, Out There, Subnautica, Space Marshals 2, and Implosion. Netflix also lists Into the Breach as supporting offline play. Is Subnautica on phones now? Yes. The official game is $9.99 on US Google Play and the App Store, and Play marks it Offline. The old claim that it was PC and consoles only is out of date.
Jump to: quick picks · buy once · free and fair · free-to-play · comparison · money traps · not on Android · offline · how we picked · bottom line
Prices, ratings, ad labels, and in-app purchase ranges below were copied from US Google Play listings on November 10, 2026. App Store prices are included where we could read them clearly. If a figure was not clearly labeled, it is left out.
Quick picks: the best sci-fi game for every kind of player
| What you want | Play this | US price we could read (Nov 10, 2026) |
|---|---|---|
| Best overall | Into the Breach | Free with an active Netflix plan |
| Best one-time purchase | XCOM 2 Collection | $14.99 on Play and the App Store; no ads, no IAP |
| Best free on Android | Mindustry | Free, no ads, no IAP (the iPhone app is $1.99) |
| Best story RPG | Star Wars: KOTOR | $9.99; KOTOR II is $14.99 |
| Best exploration | Subnautica | $9.99 on Play and the App Store |
| Best for kids who like space | Spaceflight Simulator | Free, no ads; optional packs $2.99–$11.99 |
| Best horror | Alien: Isolation | Two missions free, then a $14.99 unlock |
| Best online shooter | Warframe | Free; needs Android 12, 64-bit ARM, and 4 GB of RAM |
| Best anime RPG | Honkai: Star Rail | Free, gacha; in-app purchases $0.29–$99.99 |
Best sci-fi games you can buy once
These games charge up front, or they are included with a subscription you may already have. They do not lean on a shop full of $99 packs.
1. Into the Breach — best overall, if you have Netflix
Into the Breach is a turn-based tactics game about defending cities with three mechs. The official developer is Netflix, Inc., built from Subset Games’ PC original. The US Play listing on November 10, 2026 rates it 4.76 from 31,403 reviews, with 1 million or more installs, no ads, and no in-app purchases. It was last updated September 25, 2026. The iPhone app is also free and is published by Netflix.
Netflix’s Netflix support for Into the Breach says you need an active Netflix membership to play, that the game supports offline play and cloud saves, and that it is available on Android, iPhone, and iPad. Netflix’s broader Netflix mobile games help says its mobile games have no ads, no extra fees, and no in-app purchases, and recommends Android 9 or later. If you cancel Netflix, you lose access. Netflix membership requirement states that an active membership is required for all versions.
Best for: short, puzzle-like tactics sessions. Skip if: you do not have Netflix and do not want to start a plan; buy XCOM 2 or install Mindustry instead.
2. XCOM 2 Collection — best game to buy once
XCOM 2 Collection is Feral Interactive’s official Android port of the full tactics campaign. The US Play listing prices it at $14.99, with no ads and no in-app purchases. It rates 4.21 from 4,771 reviews, shows 100,000 or more installs, carries a Teen rating, and was last updated July 2, 2026. The listing describes it as the complete experience of XCOM 2: War of the Chosen plus four DLC packs in one package, and Google Play marks it Offline. The official US App Store app is also $14.99.
Best for: a long campaign you fully own. Skip if: you only wanted a free evening game; start with Mindustry or Into the Breach.
3. Star Wars: KOTOR — best story RPG
Star Wars: KOTOR is Aspyr Media’s official mobile version of Knights of the Old Republic. It is $9.99 on US Play, with no ads and no in-app purchases. On November 10, 2026 it rated 3.68 from 55,982 reviews, with 1 million or more installs, a Teen rating, and a last update of October 2, 2026. That update matters: older writeups still say the Android app had not been touched since May 2024. The official iPhone app is also $9.99, but that listing was last updated December 2, 2019, so the Android version is the one being maintained right now.
The sequel, STAR WARS: KOTOR II, is $14.99 on US Play, with no ads and no IAP, 4.32 from 6,003 reviews, 100,000 or more installs, and a last update of October 6, 2026. The iPhone sequel is also $14.99.
Best for: a long Star Wars RPG. Skip if: you wanted modern touch controls or a high store rating; 3.68 is a soft score, and you should try the Android build soon after purchase in case you need a Play refund.
4. Subnautica — now officially on phones
Subnautica is the official survival game from Unknown Worlds, not a fan companion app. It is $9.99 on US Play and on the App Store. The Play listing on November 10, 2026 rates it 4.54 from 6,747 reviews, shows 100,000 or more installs, an Everyone 10+ rating, no ads, and an Offline label. It was last updated October 14, 2026. The listing also shows a $0.49 in-app purchase; the store does not spell out that item in the price label, so check the offer before you buy it.
The sequel, Subnautica: Below Zero, is also on US Play. At our November 10, 2026 check the Buy button read $6.99, marked down from $9.99. It rates 4.71 from 1,280 reviews, was updated October 21, 2026, and shows no ads. The official iPhone app is $6.99. Sale prices change, so confirm the current Buy price.
Best for: underwater exploration you can play without a signal. Skip if: you wanted a short session game; this is a large survival campaign.
5. Alien: Isolation — best sci-fi horror
Alien: Isolation is Feral Interactive’s official port. The US Play listing says you can play two missions, then unlock the full game via a single in-app purchase. That unlock is listed at $14.99. There are no ads. On November 10, 2026 it rated 4.03 from 8,467 reviews, with 500,000 or more installs, a Mature 17+ rating, a last update of September 10, 2026, and an official Offline label. The iPhone app is free to download as well. This is a hiding game, not a shooter, and it is built for older teens and adults.
For more horror games, see our best horror games for Android.
Best for: a tense, single-player horror campaign. Skip if: you wanted something for kids, or a game you can finish in one sitting.
6. Lifeline — a sci-fi story that fits in a pocket
Lifeline, from 3 Minute Games, Inc., is a text adventure in which a stranded astronaut named Taylor asks you for help. It is $2.99 on US Play and the App Store, with no ads and no in-app purchases. It rates 4.46 from 72,934 reviews, with 500,000 or more installs and a Teen rating. The Play description says an internet connection is not required. The catch is freshness: the Android app was last updated February 25, 2024, and the iPhone app was last updated in 2022. It still installs, but it is a year or more behind the rest of this list.
Best for: a cheap, text-only story on any phone. Skip if: you wanted action or a recently updated app.
7. Out There: Ω Edition — the closest Android option to FTL
Out There: Ω Edition, from StoreRider, is a deep-space survival story with resource management. It is $4.99 on US Play and the App Store, with no ads and no in-app purchases. It rates 3.87 from 29,576 reviews, shows 100,000 or more installs, an Everyone rating, an official Offline label, and a last update of February 25, 2026. It is harsh, and the rating is mixed, but it is a complete paid game you can finish without a shop.
Best for: a buy-once roguelike voyage. Skip if: you specifically wanted FTL itself; that game is still not on Android (see below).
Best free sci-fi games that do not lean on a cash shop
8. Mindustry — best free sci-fi game on Android
Mindustry is a factory builder with tower-defense waves. The official Android app is free, with no ads and no in-app purchases. On November 10, 2026 it rated 4.47 from 139,461 reviews, with 5 million or more installs, an Everyone 10+ rating, an Offline label, and a last update of October 8, 2026. On iPhone the official Mindustry app is $1.99, so the free deal is the Android listing, not a universal mobile price.
Best for: a complete free game with nothing to buy. Skip if: you wanted a story campaign or a licensed movie universe.
9. Spaceflight Simulator — best for building rockets
Spaceflight Simulator is free, with no ads, and Google Play marks it Offline. Optional packs are listed from $2.99 to $11.99. It rates 4.75 from 595,270 reviews, with 10 million or more installs, an Everyone rating, and a last update of September 23, 2026. The core loop — build a rocket, launch it, and try to reach orbit — is playable without paying. The bigger parts sit in those packs.
Best for: kids and adults who want to learn why orbit is sideways, not just up. Turn on Play purchase verification first. Skip if: you wanted a story or combat game.
10. Juno: New Origins — a bigger 3D sandbox
Juno: New Origins, from Jundroo, LLC, is a free 3D builder for rockets, planes, and other machines. It has ads, no in-app purchases, an Official Offline label, a 4.04 rating from 3,054 reviews, 500,000 or more installs, an Everyone rating, and a last update of August 18, 2026. It is the step up when Spaceflight Simulator feels small, with the trade-off of ads and a heavier 3D engine.
Best for: sandbox builders on a stronger phone. Skip if: you wanted a completely ad-free free game; use Mindustry.
11. Fallout Shelter — a chill vault you can play in short sessions
Fallout Shelter is free, officially Offline, and very widely installed (50 million or more). It rates 4.58 from 3,887,692 reviews, has ads, and lists in-app purchases from $0.99 to $99.99. It was last updated October 6, 2026 and is rated Teen. You can play without paying; the paid lunchboxes only speed things up. The high IAP cap is a reminder to keep purchase verification on if a child will use the phone.
Best for: light, post-apocalypse base building. Skip if: you wanted a Fallout RPG or a game with no ads.
12–13. Space Marshals 2 and Implosion — still on the store, but aging
Space Marshals 2 is a free, offline, top-down sci-fi shooter with ads and unlocks from $2.99 to $5.99. It has 10 million or more installs and rates 3.93 from 126,381 reviews, but it was last updated September 4, 2023. Space Marshals 3 is also still listed, with a last update of April 25, 2022, so the sequel is older still.
Implosion - Never Lose Hope is a free-to-start mech brawler with no ads, a $1.99 in-app purchase, an Offline label, and 5 million or more installs. The rating is weak: 3.13 from 286,826 reviews. It was last updated December 8, 2025. Many of those reviews complain about a paywall after the opening chapter, which matches a listing that is free to install but not free to finish.
Keep both in mind as older action options that still install. They are not the first games to try in 2026.
Big free-to-play sci-fi games (fun, but watch the shop)
These are large, current games you can start for free. They also sell items up to $99.99 or more. Set a limit, and use purchase verification, before you sink hours into one.
14. Honkai: Star Rail
Honkai: Star Rail is HoYoverse’s free turn-based space RPG. It has no ads. In-app purchases run from $0.29 to $99.99. On November 10, 2026 it rated 3.66 from 526,210 reviews, with 10 million or more installs, a Teen rating, and a last update of September 17, 2026. You can play the story without paying, but new characters come from a gacha shop. See our best gacha games and Honkai: Star Rail codes if that is the loop you want.
15. Warframe — best online sci-fi shooter
Warframe is Digital Extremes’ free co-op looter, and the Play listing describes it as a story-driven online action game. It has no ads. In-app purchases run from $0.99 to $199.99. It rates 4.0 from 31,731 reviews, with 1 million or more installs, a Mature 17+ rating, and a last update of October 30, 2026. Warframe’s own Warframe Android launch post, dated February 18, 2026, says the Android version needs a 64-bit ARM64 device, Android 12 or later, and at least 4 GB of RAM. Progress can move between platforms through official cross-platform save, and you can trade with other players, which is why a high IAP cap does not automatically mean you have to pay. It will not work as an offline game.
For more shooters, see our best FPS games for Android.
16. Punishing: Gray Raven
Punishing: Gray Raven is a free anime action game with no ads and in-app purchases from $0.49 to $99.99 (the low end of that range was $0.99 when we last wrote about it). It rates 4.34 from 181,495 reviews, with 5 million or more installs, a Teen rating, and a last update of October 26, 2026.
17. Warhammer 40,000: Tacticus
Warhammer 40,000: Tacticus is a free, short-session tactics game. It contains ads, and in-app purchases run from $1.99 to $99.99. It rates 4.46 from 134,527 reviews, with 5 million or more installs, a Teen rating, and a last update of November 6, 2026. Battles are quick, but the upgrade curve is the usual free-to-play wall unless you pay.
For more turn-based options, see our best strategy games for Android.
18. EVE Echoes
EVE Echoes is a free, persistent space MMO with no ads and in-app purchases from $0.99 to $184.99. It rates 3.76 from 57,953 reviews, with 1 million or more installs, an Everyone 10+ rating, and a last update of September 1, 2026. Other players can destroy your ship. It is the right pick only if you want a live, shared galaxy. More MMOs are in our best MMORPG games list.
19. Shadowgun Legends
Shadowgun Legends: Online FPS is a free online shooter with ads and in-app purchases from $1.99 to $99.99. It rates 4.36 from 370,315 reviews, with 10 million or more installs, a Teen rating, and a last update of October 9, 2026. Paid players can get better gear faster in PvP. It is a live-service shooter, not a single-player campaign you own outright.
Sci-fi games on mobile compared (November 10, 2026)
| Game | US Play price | Ads | In-app purchases | Rating | Official Offline label? |
|---|---|---|---|---|---|
| Into the Breach | Netflix membership | No | None | 4.76 from 31,403 | Yes, per Netflix support |
| XCOM 2 Collection | $14.99 | No | None | 4.21 from 4,771 | Yes |
| Star Wars: KOTOR | $9.99 | No | None | 3.68 from 55,982 | Not labeled |
| Subnautica | $9.99 | No | $0.49 listed | 4.54 from 6,747 | Yes |
| Alien: Isolation | Free / $14.99 unlock | No | $14.99 | 4.03 from 8,467 | Yes |
| Lifeline | $2.99 | No | None | 4.46 from 72,934 | Listing says no internet required |
| Out There: Ω Edition | $4.99 | No | None | 3.87 from 29,576 | Yes |
| Mindustry | Free on Android | No | None | 4.47 from 139,461 | Yes |
| Spaceflight Simulator | Free | No | $2.99–$11.99 | 4.75 from 595,270 | Yes |
| Juno: New Origins | Free | Yes | None | 4.04 from 3,054 | Yes |
| Fallout Shelter | Free | Yes | $0.99–$99.99 | 4.58 from 3,887,692 | Yes |
| Honkai: Star Rail | Free | No | $0.29–$99.99 | 3.66 from 526,210 | No |
| Warframe | Free | No | $0.99–$199.99 | 4.00 from 31,731 | No (online game) |
| Punishing: Gray Raven | Free | No | $0.49–$99.99 | 4.34 from 181,495 | No |
| W40K: Tacticus | Free | Yes | $1.99–$99.99 | 4.46 from 134,527 | No |
| EVE Echoes | Free | No | $0.99–$184.99 | 3.76 from 57,953 | No |
| Shadowgun Legends | Free | Yes | $1.99–$99.99 | 4.36 from 370,315 | No |
The money trap: look at the highest IAP price
The top price on a Play listing is a useful warning label. Star Trek Fleet Command is a real, actively updated Star Trek game (4.25 from 313,060 reviews, 10 million or more installs, last updated November 4, 2026), and its in-app purchases still run from $0.99 to $699.99 for a single item. That is why it is not a pick here, even though it is popular. Warframe also lists a $199.99 item, but trading with other players is part of the official design, so paying is optional in a way Fleet Command’s top pack is not. Mindustry lists nothing at all.
If a child will use the phone, turn on Google Play purchase verification so buys need a PIN, password, or biometric confirmation. The default setting is to verify every purchase, including in-app purchases.
Famous sci-fi games that are not what the search box suggests
- Is FTL on Android? No. Subset Games’ Subset Games FTL FAQ says there are no plans for an Android or iPhone port, and that an iPad version is available. The official FTL on the App Store listing is $9.99 and requires iPadOS. Out There is the closest buy-once Android alternative, not a port of FTL. Watch for clone apps that borrow the name.
- Is Subnautica on Android? Yes, as of this check. The official $9.99 app is on US Play and the App Store. Below Zero is there too.
- Is Mass Effect on phones? A US Play search for the name did not return an official BioWare or Electronic Arts Mass Effect game. Ignore unofficial apps that use the name.
- Was Deus Ex GO pulled from the store? No. Older lists still say it was removed. The official Deus Ex GO listing was live on November 10, 2026, priced at $4.99, updated October 7, 2026, with a 3.84 rating from 14,431 reviews. It is a puzzle game from Deca Games, not a full Deus Ex RPG, so it is not a top pick here — but it does still install.
- Is Stellaris on Android? Not as a port of the PC strategy game. The similarly named Stellaris: Galaxy Command is a separate free-to-play title with ads and in-app purchases up to $99.99.
Which sci-fi games work offline?
These are the titles whose official US Play listing showed an Offline label on November 10, 2026, plus two cases where the official publisher says the same thing in plain language:
- XCOM 2 Collection, Alien: Isolation, Mindustry, Spaceflight Simulator, Juno: New Origins, Fallout Shelter, Out There: Ω Edition, Subnautica, Space Marshals 2, and Implosion (Play Offline label).
- Into the Breach (Netflix support: offline play, yes).
- Lifeline (Play description: internet connection not required).
KOTOR and KOTOR II did not carry that Offline label at our check, so we are not calling them offline games here. Warframe, Honkai: Star Rail, Punishing: Gray Raven, Tacticus, EVE Echoes, and Shadowgun Legends are live-service or online games. If you need more offline options, see our best offline games for Android and best offline RPGs.
Will it run on your phone?
We only list requirements we could read on official pages:
- Into the Breach / Netflix games: an active membership, enough storage, and a connection to download. Netflix recommends Android 9 or later for the best experience.
- Warframe: 64-bit Android on an ARM64 processor, Android 12.0 or higher, and at least 4 GB of RAM.
- Heavier 3D ports such as XCOM 2, Alien: Isolation, Subnautica, and Juno will use more storage and a stronger chip than a text game like Lifeline or a 2D builder like Mindustry. If the listing looks demanding, try the free or demo portion first, or read Google’s refund policy before you buy.
If your phone is older, start with Mindustry, Lifeline, or Fallout Shelter, and see our best games for low-end phones. Want physical buttons? Read how to connect a PS5 controller to Android.
How to choose the right sci-fi game
- You have Netflix and want one excellent tactics game? Into the Breach.
- You want to own a long campaign? XCOM 2 Collection, or Subnautica if you prefer exploration.
- You want a Star Wars RPG? KOTOR, then KOTOR II.
- You want free, with no shop? Mindustry on Android.
- You want to build rockets? Spaceflight Simulator, then Juno.
- You want sci-fi horror? Alien: Isolation, after you confirm you are comfortable with a Mature 17+ game.
- You want a live, years-long online game? Warframe, if your phone meets Android 12 and 4 GB of RAM.
- You were searching for FTL? It is not on Android. Try Out There, or FTL on iPad.
How we picked and updated this list
Every numbered game has a live US Google Play listing as of November 10, 2026. Prices, ratings, download counts, ad labels, in-app purchase ranges, age ratings, update dates, and Offline labels were copied from those pages the same day. Netflix access rules and Into the Breach’s offline support come from Netflix’s official help pages. Warframe’s Android requirements come from Warframe’s February 18, 2026 launch post. FTL’s platform limits come from Subset Games’ FAQ and the official iPad App Store listing. We did not play through every game for this update, and we did not invent prices or system requirements that were not clearly labeled. Rankings are editorial, based on the job each official app is sold for and on how clean the purchase model is. Who / how / why: Aditya Singh, AndroidHire.
Bottom line
If you have Netflix, install Into the Breach. If you want one paid game you fully own, buy XCOM 2 Collection at $14.99, or Subnautica at $9.99 if you would rather explore than command soldiers. If you want a truly free Android game, install Mindustry. And if you came here looking for FTL, Mass Effect, or a missing Deus Ex GO: FTL is still iPad and PC only, Mass Effect still has no official phone game, and Deus Ex GO is actually still on the store — it is just a $4.99 puzzle game, not a top pick.
For the next genre over, try our best strategy games, best open-world games, or best action RPGs.
