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Best Indie Sci-Fi Game

174+ iOS apps & games curated and reviewed

4.4 avg rating
13 free apps & games
Updated June 2026

From beginner-friendly picks to power-user tools, our indie sci-fi game list covers 174+ iPhone apps and games updated through June 2026. Compare ratings, prices, and screenshots in one place.

Compare top Indie Sci-Fi Game (June 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Iron Marines RTS Strategy GameIron Marines RTS Strategy Game$2.994.8★ (26K)YesYesJul 2026
2Rivals at War: 2084Rivals at War: 2084Free4.0★ (284)YesYesMay 2026
3Iron Marines Invasion RTS GameIron Marines Invasion RTS Game$2.994.6★ (243)NoYesJul 2026
4Color Defense - Tower StrategyColor Defense - Tower StrategyFree4.4★ (1.3K)NoYesJul 2026
5EVE EchoesEVE EchoesFree3.4★ (3.5K)NoYesJul 2026
6Pixel Starships™Pixel Starships™Free4.7★ (35K)YesYesJul 2026
7Star Traders: FrontiersStar Traders: Frontiers$6.994.6★ (666)NoNoJul 2026
8Evolution 2: Battle for UtopiaEvolution 2: Battle for UtopiaFree4.7★ (2.9K)YesYesJul 2026

Top Picks for Indie Sci-Fi Game

Iron Marines RTS Strategy Game#1

Iron Marines RTS Strategy Game by Ironhide S.A.

Sci-Fi Space Battle Games
Editor's Choice
🎮 Games
4.8😊(26K ratings)
$2.99AdsIn-App Purchases
#79in Games
Iron Marines RTS Strategy Game screenshot 1
Iron Marines RTS Strategy Game screenshot 2
Iron Marines RTS Strategy Game screenshot 3
Iron Marines RTS Strategy Game screenshot 4
Iron Marines RTS Strategy Game screenshot 5
Iron Marines RTS Strategy Game screenshot 6

Engage in real-time strategy battles across alien planets. Command diverse units, recruit powerful heroes, and adapt your tactics to overcome hordes of enemies and unique bosses in a galactic war. Play offline and choose your difficulty.

What We Love

  • 🚀 Excellent graphics and art style
  • 👍 Engaging and challenging gameplay
  • 💡 Unique blend of RTS and tower defense elements
  • 🎨 Humorous sci-fi theme with fun references

Room to Improve

  • 🔒 Expensive in-app purchases for additional heroes
  • 🕰️ Short campaign length for the price
  • 🐛 Occasional crashes and performance issues
Rivals at War: 2084#2

Rivals at War: 2084 by Hothead Games

Epic TPS Shooting Game
Strong Contender
🎮 Games
4.0(284 ratings)
FreeAdsIn-App Purchases
Rivals at War: 2084 screenshot 1
Rivals at War: 2084 screenshot 2
Rivals at War: 2084 screenshot 3
Rivals at War: 2084 screenshot 4
Rivals at War: 2084 screenshot 5

Engage in epic sci-fi battles in 2084, training and equipping space marines to conquer planets. Lead your forces across a star map, challenge friends, and strategize with tactic cards to dominate the galaxy.

Iron Marines Invasion RTS Game#3

Iron Marines Invasion RTS Game by Ironhide S.A.

Sci-Fi Space Army Battle Games
Worth Considering
🎮 Games
4.6😊(243 ratings)
$2.99In-App Purchases
Iron Marines Invasion RTS Game screenshot 1
Iron Marines Invasion RTS Game screenshot 2
Iron Marines Invasion RTS Game screenshot 3
Iron Marines Invasion RTS Game screenshot 4
Iron Marines Invasion RTS Game screenshot 5
Iron Marines Invasion RTS Game screenshot 6

Lead your space army across a vast galaxy in this real-time strategy game. Conquer new worlds, battle alien creatures, and upgrade your heroes and units to defend the galaxy. Offers deep strategic gameplay with diverse missions and challenges.

What We Love

  • 🚀 Awesome game
  • 🚀 Fun
  • 🚀 Great gameplay
  • 🚀 Excellent sequel

Room to Improve

  • 🐛 Crashes
  • 🐛 Bugs
  • 💰 Expensive in-app purchases

More Indie Sci-Fi Game apps to explore

4
Color Defense - Tower Strategy
Color Defense - Tower Strategy
Color Defense - Tower Strategy
A Tower Geo War Defence Puzzle
Free

Defend a reactor by strategically placing unique defense mechanisms to stop colored creeps. This free-to-play puzzle and strategy game offers a meditative experience with a sci-fi backstory and smart placement technology.

Free to play all contentUnique defense mechanismsPuzzle and strategy gameplay
🎮 Games
(1.3K)
free with in-app purchases
5
EVE Echoes
EVE Echoes
EVE Echoes
Forge Your Cosmic Legacy
Free

Embark on an epic space adventure in a vast, explorable galaxy. Discover new regions, battle formidable drone factions, and upgrade your fleet with advanced technology. Forge your legacy among the stars.

Explore vast galaxy regionsBattle new drone factions (Wasteseeker)Utilize unstable wormholes for travel
🎮 Games
(3.5K)
free with in-app purchases
6
Pixel Starships™
Pixel Starships™
Pixel Starships™
Online 8Bit Star Ship Trek
Free

Command every aspect of your starship in a persistent online universe. Build, battle, explore, and manage resources in this 8-bit spaceship management game. Form alliances and conquer with friends.

Build custom starshipsCommand multiple races and factionsOnline player battles
🎮 Games
(35K)
free with in-app purchases
7
Star Traders: Frontiers
Star Traders: Frontiers
Star Traders: Frontiers
The sci-fi captain RPG
$6.99

Command your own starship and crew in a vast, procedurally generated open universe. Forge your path as a pirate, merchant, bounty hunter, or explorer, influencing factions and shaping your crew through your choices in this epic sci-fi RPG.

Open universe explorationMultiple captain careers (26 jobs)Spaceship customization (350+ upgrades)
🎮 Games
(666)
paid
8
Evolution 2: Battle for Utopia
Evolution 2: Battle for Utopia
Evolution 2: Battle for Utopia
Sci-fi post-apocalypse shooter
Free

Engage in a thrilling sci-fi shooter experience on Planet Utopia, a post-apocalyptic world filled with danger. Combine strategy, RPG, and action elements with powerful weapons and unique abilities to battle enemies and uncover the planet's secrets.

Sci-fi post-apocalypse settingMix of strategy, RPG, and action shooterTactical gameplay and character leveling
🎮 Games
(2.9K)
free with in-app purchases
9
Ticket to Earth
Ticket to Earth
Ticket to Earth
Epic Indie Puzzle RPG
$4.99

Engage in tactical combat on a puzzle grid, matching tiles to power up abilities and defeat enemies. Explore a sci-fi world, customize your team, and uncover a deadly conspiracy in this award-winning puzzle RPG.

Tactical grid-based combatTile-matching puzzle mechanicsStory-driven RPG elements
🎮 Games
(687)
paid
10
Morphite
Morphite
Morphite
An Epic Scifi Adventure
$7.99

Embark on a sci-fi adventure as a young woman uncovering her past. Explore uncharted planets, battle alien creatures, and gather resources in a procedurally generated universe. Unravel mysteries, upgrade your gear, and engage in real-time space combat.

Procedurally generated worldsFully voiced main storylineEnvironmental puzzle solving
🎮 Games
(946)
paid
11
Stellaris: Galaxy Command
Stellaris: Galaxy Command
Stellaris: Galaxy Command
Sci-Fi, space strategy game
Free

Lead the rebuilding of galactic civilization after an inter-dimensional invasion. Build your space station, explore star systems, form alliances, and wage war in a real-time universe with thousands of players. Experience an epic sci-fi story with strategic gameplay.

Space station construction and customizationForm and join alliancesIntergalactic trade systems
🎮 Games
(1.6K)
free with in-app purchases
12
Out There: Ω Edition
Out There: Ω Edition
Out There: Ω Edition
Space exploration
$4.99

Embark on a challenging space survival adventure where you must manage resources, explore a procedurally generated galaxy, and unravel a compelling narrative. Encounter alien species and make critical choices to determine the fate of humanity.

Procedurally generated galaxy explorationResource management and craftingHandwritten narrative adventures
🎮 Games
(362)
paid
13
Star Hunter-Infinite Lagrange
Star Hunter-Infinite Lagrange
Star Hunter-Infinite Lagrange
Rally the Fleet,Hunt the Stars
Free

Command your fleet in a post-war galaxy, taking on bounty contracts and exploring ruins for treasure and technology. Build your base, upgrade your ships, and engage in tactical space combat. The choice is yours: roam the void or rise from chaos.

Interstellar tactical extraction gameplayFleet command and controlBounty hunting and contract missions
🎮 Games
(7.4K)
free with in-app purchases
14
Evolution: Battle for Utopia
Evolution: Battle for Utopia
Evolution: Battle for Utopia
by Keystorm Holdings Limited
Free

Embark on an interstellar expedition to a post-apocalyptic planet. This RPG game blends action, strategy, and advanced graphics as you uncover mysteries, build a colony, and engage in thrilling real-time combat. Explore, research alien technology, and battle formidable foes.

Engaging storyline and intergalactic adventureReal-time battle action and tactical combatBuild and fortify a military base
🎮 Games
(320)
free with in-app purchases
15
Transistor
Transistor
Transistor
by Supergiant Games, LLC
$4.99

Embark on a science fiction action RPG adventure in a futuristic city. Wield a mysterious weapon, master strategic combat with customizable abilities, and unravel a deep, atmospheric story. Designed for touchscreens with optional gamepad support.

Science fiction action RPGFuturistic city settingCustomizable weapon abilities
🎮 Games
(713)
paid
16
Star Trek Fleet Command
Star Trek Fleet Command
Star Trek Fleet Command
MMO Strategy SciFi Warfare
Free

Command a star base and build a powerful fleet in an open-world intergalactic strategy game. Recruit iconic officers, explore new worlds, and engage in epic battles to conquer the universe. Join alliances and uncover ancient secrets in a galaxy on the brink of war.

Galactic conflict with iconic ships and charactersDeep strategic RPG gameplayCollect, build, and upgrade ships
🎮 Games
(67K)
free with in-app purchases
17
Galaxy Reavers 2
Galaxy Reavers 2
Galaxy Reavers 2
3D sci-fi Star Wars RTS game
Free

Engage in intense 3D sci-fi real-time strategy battles in space. Command your fleet, customize spaceships with advanced weaponry, and unlock commanders to conquer galaxies. Explore planets and master strategic combat to achieve victory.

Sci-fi RTS strategic battles3D camera controlSpaceship customization
🎮 Games
(2K)
free with in-app purchases
18
ASTROKINGS: Galactic Survival
ASTROKINGS: Galactic Survival
ASTROKINGS: Galactic Survival
Command fleets, battleship war
Free

Command powerful fleets in epic space battles, manage resources, and build planetary facilities. Customize your starships and lead your alliance to conquer the galaxy in this sci-fi real-time strategy multiplayer saga.

Build and upgrade planetary facilitiesRecruit galactic heroesMine and trade space resources
🎮 Games
(1.9K)
free with in-app purchases
19
Full of Stars
Full of Stars
Full of Stars
Epic Space Adventure
Free

Embark on a story-driven space journey to guide humanity's survival through a war-torn galaxy. Captain a ship, make critical choices, and explore unknown sectors filled with alien life and ancient empires. Upgrade your vessel and your sanctuary to overcome challenging gameplay and ensure a safe haven for refugees.

Story-driven space journeyIntuitive arcade mechanicsRogue-like replayability
🎮 Games
(2.9K)
free with in-app purchases
20
TerraGenesis - Space Settlers
TerraGenesis - Space Settlers
TerraGenesis - Space Settlers
Terraform Universe Planets
Free

Simulate the terraforming of planets using real scientific principles. Cultivate life, manage resources, and build civilizations on various worlds, from our solar system to fictional planets and moons. Encounter alien life and defend your settlements from cosmic threats.

Idle planet building simulatorReal science from NASATerraform planets and moons
🎮 Games
(32K)
free with in-app purchases

FAQ about Indie Sci-Fi Game

What is the best indie sci-fi game for iPhone?
Iron Marines RTS Strategy Game tops our indie sci-fi game ranking as of June 2026, with a 4.8-star average from 26K App Store ratings, and it's priced at $2.99.
Yes — 13 of the top indie sci-fi game we rank are free to download, including Rivals at War: 2084 and Color Defense - Tower Strategy.
Iron Marines RTS Strategy Game shows ads and offers in-app purchases, according to its App Store listing as of June 2026.
We track 174+ indie sci-fi game on the iOS App Store as of June 2026, ranked by rating, recency, and analysis of real user reviews.
Iron Marines is a real-time strategy (RTS) game set in a science fiction universe. Players command units, adapt tactics, and battle against various enemies across different planets. It features offline play, allowing you to enjoy the game without an internet connection.
Key features include 21 campaign missions across three planets, the ability to recruit and train heroes with unique powers, and the flexibility to change troop roles during battles. Players can also utilize special weapons like orbital strikes and deploy over 40 upgrades for their army.