Defend humanoids from alien invaders in this retro 80s-style arcade shooter. Experience fast-paced gameplay with classic mechanics, enhanced graphics, and engaging power-ups across hundreds of levels on three different planets.






245+ iOS apps & games curated and reviewed
Interstellar Guardian is the household name in defender arcade game, but it's far from the only option. We track 245+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | 4.8★ (36) | No | No | Jul 2026 | |
| 2 | $1.99 | 2.5★ (54) | No | No | Jul 2026 | |
| 3 | Free | 4.6★ (26K) | Yes | Yes | Aug 2026 | |
| 4 | Free | — | Yes | No | May 2026 | |
| 5 | Free | 4.4★ (454) | No | Yes | Jul 2026 | |
| 6 | Free | 4.7★ (16K) | Yes | No | Aug 2026 | |
| 7 | Free | 4.6★ (20K) | No | Yes | Aug 2026 | |
| 8 | Free | — | Yes | No | May 2026 |






Defend humanoids from alien invaders in this retro 80s-style arcade shooter. Experience fast-paced gameplay with classic mechanics, enhanced graphics, and engaging power-ups across hundreds of levels on three different planets.






Relive a classic arcade experience by defending astronauts from alien abduction and destroying enemy ships. Be careful not to harm the astronauts, as their safety is crucial to preventing planetary destruction and mutant alien transformations.






Engage in thrilling arcade-style space combat, defending the galaxy from alien invaders. Pilot customizable starships, upgrade weapons, and face challenging missions and bosses. Experience a blend of classic nostalgia and modern action with competitive multiplayer and leaderboards.




Defend Earth from an alien invasion in this fast-paced arcade space shooter. Upgrade your ship with powerful enhancements and conquer over 150 unique levels, including challenging boss battles. Compete for high scores and save your progress.


Engage in an intense shooting and strategy game where you merge defensive towers to repel waves of monsters, orcs, and aliens. Develop tactical formations and upgrade your war machines to protect your base and survive challenging boss attacks.


Experience a classic arcade roller game with stunning 3D graphics and realistic physics. Compete head-to-head with players worldwide, climb leaderboards, and customize your dream arcade. Unlock unique skins and characters for a personalized experience.




Engage in fast-paced tower defense battles against alien invaders. Deploy a variety of towers, heroes, and infantry to defend Earth. Upgrade your defenses and strategize to overcome hordes of enemies across numerous levels and challenges.


Engage in a thrilling survival-based running game where your objective is to defeat all enemies. Experience intense gameplay focused on combat and evasion to achieve victory.


Experience a collection of visually rich arcade games with unique gameplay. Each game offers dynamic effects, strategic mechanics, and responsive interactions for an engaging and replayable experience. This app focuses on skill, timing, and strategy for pure entertainment.


Relive the classic arcade experience with this remake of Galaxian. Control your defender ship by tilting your phone and shoot waves of alien spaceships to achieve a high score. This compact game offers classic space shooter action.






Engage in a classic side-scrolling shoot 'em up experience. Pilot a planetary freedom fighter through 8 levels, blasting waves of enemies and defeating bosses. Collect power-ups and enjoy humorous dialogue between battles.










Defend your city from incoming alien bombs in this addictive mini-game. Strategically use rocket launchers to destroy the bombs as they fall, with increasing difficulty and a focus on challenging your high score.