179+ iOS apps & games curated and reviewed
The best star battle defense apps and games on iPhone average 4.6★ across 179+ titles — we've ranked them by what real users actually keep on their phones. Updated May 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 4.8★ (8.9K) | Yes | Yes | Jul 2026 |
| 2 |  | Free | 4.8★ (1.7K) | Yes | Yes | Jul 2026 |
| 3 |  | Free | 4.8★ (4.8K) | Yes | Yes | Jul 2026 |
| 4 |  | Free | 4.2★ (134) | No | Yes | Jul 2026 |
| 5 |  | Free was $9.99 | 4.5★ (822) | Yes | Yes | Jul 2026 |
| 6 |  | Free | 4.7★ (298K) | Yes | Yes | Jul 2026 |
| 7 |  | Free | 4.4★ (417) | Yes | Yes | Jul 2026 |
| 8 |  | Free | 4.8★ (72) | Yes | Yes | Jul 2026 |
Defend Earth from alien invaders in this idle tower defense game. Build diverse turrets, strategize your defense, and power up your character with unique skills and weapons. Collect resources and take on global challenges to protect the planet.
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.
Engage in an adventurous competitive mobile game where you conquer planets by drawing lines. Experience exciting gameplay with multi-level challenges and fantasy props to create effective combinations for a high-quality gaming experience.
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.
Build, customize, and command your own starship in this sci-fi strategy game. Engage in real-time space battles, explore a vast galaxy, and form alliances with other players. Features stunning pixel art and regular updates.
Engage in epic real-time strategy battles to defeat an evil force and free enslaved islanders. Build a powerful base, train an army, and form alliances with players worldwide to conquer enemy bases and control resources in a tropical archipelago.
Engage in real-time PvP combat to conquer the galaxy. Build your base, train an army of futuristic robots, and strategize attacks to steal resources and earn medals. Features stunning 3D graphics and various war modes.
Defend your planet from alien bugs in this strategy-based tower defense game. Collect legendary heroes, build your squad, and survive endless waves of monsters in epic battles. Compete in survival challenges and prove yourself as a true legend of defense.
Engage in legendary duels and strategic battles in this idle simulation game. Choose troops, prepare tactics, and clash against opponents to win royal battles with unique characters. Play less and earn more in this free-to-download strategy experience.
Tap the screen to unleash a barrage of weapons and expel alien invaders to claim planets. Engage in a casual, amusing experience with various weapons and distinct civilizations.
Engage in epic galactic warfare with a massive fleet in this augmented reality space strategy game. Conquer planets, build armadas, and outmaneuver adaptive AI opponents. Experience stunning 3D battles with intuitive controls, playable with or without AR.
Command a space station in a real-time strategy game with roguelike elements. Defend against alien threats, research technology, and build your fleet to save a human colony. Every decision leads to an epic battle.
Defend planets from alien invasions in this fast-paced arcade shooter. Obliterate waves of extraterrestrial foes, strategically upgrade your arsenal, and confront formidable bosses to save the cosmos.
Pilot a lone spaceship to defend Earth from relentless alien swarms in this classic space shooter. Upgrade your weapons and skills to overcome increasingly difficult challenges across numerous levels and intense boss battles.
Command a quirky feline army in this simple yet strategic tower defense game. Tap to deploy cats, fire a powerful cannon, and evolve your units to conquer stages and defeat enemy bases across various worlds. Collect unique cats and treasures to build the ultimate cat force.
Defend your castle tower from waves of medieval warriors and powerful bosses. Use arrows to repel enemies and upgrade your weapons with collected coins to protect your kingdom. This free-to-play strategy game offers an epic battle experience.
Embark on an interstellar adventure to defend humanity from an alien invasion. Build and expand your base, develop powerful fighter jets and mechs, and engage in strategic combat to reclaim planets and ultimately defeat the enemy. Experience a visually rich 3D world with smooth gameplay.
Build a village, raise a clan, and battle other players worldwide in strategic wars. Train unique troops, research upgrades, and defend your stronghold against attacks. Compete in leagues and rise to the top.
Collect and merge units to build a powerful deck for strategic base defense. Engage in PvP battles or team up with friends in Co-Op mode to conquer enemies and earn rewards. Master unique unit abilities and faction synergies to prevail.
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.