Best Starbase Defense Apps & Games

195+ iOS apps & games curated and reviewed

4.4 avg rating
18 free apps & games
Updated May 2026

SpaceXYZ is the household name in starbase defense, but it's far from the only option. We track 195+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Top Picks for Starbase Defense

SpaceXYZ: Idle Tower Defense#1

SpaceXYZ: Idle Tower Defense by Supermagic Inc.

Strategic Defense Game!
Editor's Choice
🎮 Games
4.8😊(1.7K ratings)
FreeAdsIn-App Purchases
SpaceXYZ: Idle Tower Defense screenshot 1
SpaceXYZ: Idle Tower Defense screenshot 2
SpaceXYZ: Idle Tower Defense screenshot 3
SpaceXYZ: Idle Tower Defense screenshot 4
SpaceXYZ: Idle Tower Defense screenshot 5

Engage in real-time strategy to defend your base against relentless enemy waves. Build, upgrade, and deploy a variety of units with precise timing to survive epic battles in space. Master strategic decisions to overcome increasingly difficult challenges.

What We Love

  • 👍 Fun gameplay
  • 🚀 Good progression
  • 💡 Innovative features
  • 👍 No forced ads

Room to Improve

  • 🐛 Progress loss issues
  • 🐛 Crashing problems
  • 💰 Expensive to remove ads
Radiant Defense#2

Radiant Defense by David Peroutka

MILLIONS OF ALIENS WILL DIE
Strong Contender
🎮 Games
4.2😊(134 ratings)
FreeIn-App Purchases
Radiant Defense screenshot 1
Radiant Defense screenshot 2
Radiant Defense screenshot 3
Radiant Defense screenshot 4
Radiant Defense screenshot 5
Radiant Defense screenshot 6

Defend your space fortress against alien invasions in this vibrant defense game. Strategically build your base, deploy a variety of weapons and traps, and customize enemy paths to survive hundreds of waves. Compete for high scores in an online hall of fame.

What We Love

  • 💎 One of My Favorite Games Ever
  • 🏆 GOAT TD
  • 🎨 Vibrant design and friendly to battery life
  • 🕹️ Nostalgic and simple fun with a good amount of challenge

Room to Improve

  • 🔓 Pay to complete
  • 🔓 Can't be completed without buying extras
  • 🔓 Pay to win
Ancient Planet Tower Defense#3

Ancient Planet Tower Defense by Dmitri Isaenkov

They're coming right for you!
Worth Considering
🎮 Games
4.6😊(1.1K ratings)
FreeIn-App Purchases
Ancient Planet Tower Defense screenshot 1
Ancient Planet Tower Defense screenshot 2
Ancient Planet Tower Defense screenshot 3
Ancient Planet Tower Defense screenshot 4

Defend an ancient stronghold from alien invaders using powerful technologies. Build and upgrade towers in a classic tower defense experience with unique levels and diverse enemies. Enjoy an offline, ad-free strategy game with a compelling storyline.

What We Love

  • 👍 Fun and addictive gameplay
  • 🚀 Smooth and responsive
  • 🔒 No ads or in-app purchases required
  • 💡 Unique tower and upgrade mechanics

Room to Improve

  • 🐛 Difficulty spikes can be frustrating
  • 💰 Upgrading towers can be grindy
  • 🔋 Survival mode rewards are underwhelming

More Starbase Defense apps to explore

4
Base Defense!
Base Defense!
Base Defense!
by Rollic Games Oyun Yazilim ve Pazarlama Anonim Sirketi
Free

Lead your community, manage resources, and defend your base from enemies. Explore new areas to rescue civilians and expand your territory. Upgrade your character and hire workers to strengthen your defenses and conquer new bases.

Base defense and expansionResource managementEnemy combat and boss battles
🎮 Games
(10K)
free with in-app purchases
5
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
6
Galaxy Defender: Tower Defense
Galaxy Defender: Tower Defense
Galaxy Defender: Tower Defense
Battle Against Evil Robots
Free

Defend your homeland from waves of evil robots by strategically deploying and upgrading a variety of powerful weapons. Explore diverse landscapes and adapt your tactics to overcome increasingly challenging robotic invaders in this exhilarating tower defense game.

Strategic weapon deploymentSix unique upgradable gunsDiverse and challenging landscapes
🎮 Games
(88)
free with in-app purchases
7
iBomber Defense Pacific
iBomber Defense Pacific
iBomber Defense Pacific
Award Winning Tower Defense
$2.99

Engage in strategic tower defense battles across land, sea, and air. Protect your base, upgrade weapons, and unlock new abilities to overcome enemy assaults. Earn victory points and develop your ultimate defense strategy to win the campaign.

Base defense against land, sea, and air attacksWeapon upgrades and unlocksPerk system for strategic boosts
🎮 Games
(49)
free with in-app purchases
8
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
9
Sky Defense: War Duty
Sky Defense: War Duty
Sky Defense: War Duty
Epic aircraft attacking game
Free

Defend your airspace in an intense arcade shooter against an alien invasion. Engage in fast-paced, vertical ground-to-air combat with realistic visuals and a thrilling story. Perfect for quick bursts of action.

Fast-paced arcade shootingUnique vertical gameplayThrilling story mode
🎮 Games
(11K)
free with in-app purchases
10
Ark of War: Aim for the cosmos
Ark of War: Aim for the cosmos
Ark of War: Aim for the cosmos
Win by your strategy!
Free

Command a space ark, build a formidable fleet with human and alien commanders, and engage in large-scale, real-time wars with players worldwide. Conquer territories, govern planets, and trade resources in this galactic strategy game.

Construct and operate space arksBuild and upgrade formidable fleetsCollect and evolve commanders
🎮 Games
(8K)
free with in-app purchases
11
WARHEAD: Air & Missile Defense
WARHEAD: Air & Missile Defense
WARHEAD: Air & Missile Defense
Modern War Tower Defense
Free

Engage in intense, modern military tower defense battles using real-world air and missile systems. Adapt to destructible environments and master deep strategic upgrades to defend contested skies.

Real-world weapon systemsDestructible battlefieldsDeep modular upgrades
🎮 Games
(198)
free with in-app purchases
12
Planet Defense: Space TD game
Planet Defense: Space TD game
Planet Defense: Space TD game
Galactic TD Strategy
Free

Defend your home planet in this roguelike tower defense game. Build and upgrade defenses to fend off alien invaders. Experience deep strategy with unique playthroughs and unlockable sentinels.

Roguelike progression with randomized upgradesStrategic depth with unlockable sentinelsStunning visuals and atmospheric sound
🎮 Games
(2.2K)
free with in-app purchases
13
iBomber Defense
iBomber Defense
iBomber Defense
by Cobra Mobile Limited
$2.99

Engage in classic tower defense with intense action and strategy. Defend locations worldwide using a variety of weapons and tactics. Choose from Quick Play or Campaign modes across different theaters of war.

Classic tower defense gameplayVariety of weapons and tacticsQuick Play and Campaign modes
🎮 Games
(130)
paid
14
Tower Defense: Infinite War
Tower Defense: Infinite War
Tower Defense: Infinite War
by Com2uS Corp.
Free

Engage in a classic tower defense experience with strategic gameplay and action-packed battles. Explore diverse campaigns, challenging maps, and unique towers to defeat various enemies across multiple world themes. Enjoy a highly-rated defense game with regular updates.

40 campaigns and 7 challenge mapsVarious gameplay modesMindbending towers and special weapons
🎮 Games
(2.2K)
free with in-app purchases
15
Marsaction: Infinite Ambition
Marsaction: Infinite Ambition
Marsaction: Infinite Ambition
Eliminate the Swarms on Mars
Free

Defend humanity's Martian colony from mutated insectoid creatures. Build your base, explore the planet, and unite with allies to survive and uncover the cause of the Swarm's aggression.

Explore Mars and attack SwarmsBuild and expand your BaseUnite with allies in an Alliance
🎮 Games
(10K)
free with in-app purchases
16
Iron Dome vs ICBM War
Iron Dome vs ICBM War
Iron Dome vs ICBM War
Iron Dome vs ICBM
Free

Engage in a strategic war game where you build and defend your city with advanced missile systems. Launch ICBMs to attack enemies and survive waves of incoming rockets in this offline and online experience.

Build and expand war cityDevelop economy and military techDeploy advanced missile defense
🎮 Games
(41)
free with in-app purchases
17
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
18
Battle Warship: Naval Empire
Battle Warship: Naval Empire
Battle Warship: Naval Empire
Strategy naval warfare game!
Free

Command powerful naval fleets in a post-apocalyptic world. Build your base, upgrade warships and aircraft, and engage in strategic battles against pirates, sea monsters, and other players globally. Form alliances to dominate the waves and claim victory.

Build and develop a navy baseCommand over 100 types of carriersUtilize advanced aircraft and warships
🎮 Games
(6.4K)
free with in-app purchases
19
ASTRONEST - The Beginning
ASTRONEST - The Beginning
ASTRONEST - The Beginning
by ANGames Co.,Ltd
Free

Engage in a massive space strategy MMO where you colonize planets, build powerful fleets, and battle players globally. Explore alien technologies, form alliances, and lead humanity's fight for survival in a galactic war.

Colonize planetsBuild epic space fleetsBattle players worldwide
🎮 Games
(540)
free with in-app purchases
20
Rogue Defense: Hybrid Tower TD
Rogue Defense: Hybrid Tower TD
Rogue Defense: Hybrid Tower TD
Hybrid Tower, Ultimate Defense
Free

Lead humanity's last stand against a rogue AI uprising in this hybrid tower defense game. Customize your defender with advanced cyber tech, deploy futuristic weapons, and harness enemy energy to unlock powerful upgrades and skills. Experience endless replayability with procedurally generated challenges and tactical depth.

Hybrid Roguelike + Tower DefenseCustomizable Guardian with adaptive chipsDeploy futuristic and evolving weapons
🎮 Games
(2K)
free with in-app purchases