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.






244+ iOS apps & games curated and reviewed
Interstellar Guardian is the household name in defender arcade, but it's far from the only option. We track 244+ 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★ (59) | No | No | Oct 2026 | ||
| 2 | $2.99 | 3.5★ (2) | No | No | Sep 2026 | ||
| 3 | Free | — | Yes | No | May 2026 | ||
| 4 | Free | — | No | No | May 2026 | ||
| 5 | Free | 4.4★ (454) | No | Yes | Sep 2026 | ||
| 6 | Free | 5.0★ (1) | Yes | No | May 2026 | ||
| 7 | Free | 5.0★ (1) | Yes | Yes | Sep 2026 | ||
| 8 | Free | — | Yes | No | Sep 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.


