# Atlantis Invaders vs Space Defenders

The clearest difference is in-app purchases: Space Defenders at none against Atlantis Invaders's 10. Space Defenders also leads on iOS requirement (12.0 vs 15.0). Atlantis Invaders's advantage is update cadence (fortnightly vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. Atlantis Invaders sells 10 one-off in-app purchases. Space Defenders asks for nothing beyond the download.

Atlantis Invaders ships an update fortnightly, Space Defenders monthly. The most recent releases landed on November 7, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Atlantis Invaders | Space Defenders |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (2.8K ratings)](https://appshunter.io/ios/app/atlantis-invaders/id1560947378/reviews)** | — |
| Number of ratings | **2.8K** | — |
| Positive reviews | 31.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 424 MB | 70 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 9+ |
| Developer | [Spirit Bomb](https://appshunter.io/developer/1560947380) | [Rodwel Polanco Martinez](https://appshunter.io/developer/1643362516) |

## What reviewers say

### Atlantis Invaders

[App page](https://appshunter.io/ios/app/atlantis-invaders/id1560947378)

Dive into an underwater arcade shooter where you defend the sunken kingdom of Atlantis from mechanical invaders. Experience intense bullet-hell action, upgrade your submarine fleet, and battle colossal bosses in a stunning deep-sea environment. Play anytime, anywhere with 100% offline action.

**Highlights:** Deep-sea arcade shooter gameplay, Bullet-hell projectile dodging, Fleet building and submarine upgrades, Tactical drone support, Epic boss battles, Stunning underwater environments, 100% offline play

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fortune Tree 1 | $0.99 | one-time |
| Piggy Bank 1 | $1.99 | one-time |
| Chapter Pack 4 | $2.99 | one-time |
| 240 Diamonds Pack | $4.99 | one-time |
| Piggy Bank 2 | $4.99 | one-time |
| Veteran Pass 1 | $4.99 | one-time |
| Premium Card | $4.99 | one-time |
| Fortune Tree 3 | $4.99 | one-time |
| Veteran Pass 2 | $13.99 | one-time |
| Super Premium Card | $19.99 | one-time |

**What reviewers like**

- 🚀 Fast-paced gameplay
- 👍 Fun and entertaining
- 💡 Competitive boss battles

**What reviewers complain about**

- 🐛 Bugs and crashes
- 🔋 Excessive ads and in-app purchases
- 👎 Lack of cloud save functionality

**Reported bugs**

- Game crashes on launch
- Progress not saving properly
- Connectivity issues

**Requested features**

- More level updates
- Improved save/load system
- Reduced advertising


### Space Defenders

[App page](https://appshunter.io/ios/app/space-defenders-arcade/id6463466903)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Atlantis Invaders free?

Atlantis Invaders is free to download, with in-app purchases available.

### Is Space Defenders free?

Space Defenders is free to download, with no in-app purchases.

### Do Atlantis Invaders or Space Defenders have ads?

Both Atlantis Invaders and Space Defenders show ads.

### Which is updated more often, Atlantis Invaders or Space Defenders?

Atlantis Invaders ships an update fortnightly, and Space Defenders monthly. Most recently, Atlantis Invaders was updated on November 7, 2026 and Space Defenders on October 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*