# Blue Defense: Second Wave! — Six billion versus infinity!

> Intense planetary defense arcade shooter with multiple game modes and leaderboards. (iPhone/iPad app by Cat in a Box Software.)

- Source: https://appshunter.io/ios/app/blue-defense-second-wave/id389817492 (this page in markdown: same URL + `.md`)
- Developer: [Cat in a Box Software](https://appshunter.io/developer/1600179204)
- Category: Games, Entertainment, Action, Casual
- Price: Free with in-app purchases (on sale, was $2.99)
- Rating: 4.30/5 from 20 App Store ratings · 49 written reviews indexed
- Age rating: 9+
- Requires: iOS 16.0 · 16 MB
- Languages: American English
- Released: 2010-09-30
- Data updated: 2026-08-18
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/blue-defense-second-wave/id389817492/reviews.md

## What is Blue Defense?

"Entirely unique, without peer on the app store!" - NoDpad
"Original, intense, addictive, and most of all, fun!" - 148apps

Intense planetary defense arcade action!  The Blue planet is in peril - take the fight into your own hands, and blast the evil Red and Green enemies out of the sky with the all-new planet cannon!

Blue Defense: Second Wave builds on the legendary pick-up-and-play gameplay of the original 2008 hit, hailed as an "App Store classic" by many.  With game modes ranging from just seconds to several hours, you won't be able to put it down!*

6.8 billion lives hang in the balance... how long can you keep them alive?


"A game that's not to be missed." - TouchArcade

"A brilliantly executed game... Replay value is outstanding!" - AppSmile


Features:
- The planet cannon lets you take out hundreds of enemies at once!
- All-new Gauntlet mode lets you win the game!**
- Infinite-Classic and Infinite-Quickstart modes - last as long as you can!
- Level select mode - practice a level, and earn medals for your skills!
- 74 mode-based global leaderboards!
- Automatic save state - continue your game, even without iOS 4!
- Updated retro art style
- iPhone 4 Retina resolution graphics
- Runs smooth and fast even on the oldest devices

Content:
- Red and Green enemies!
- 24 enemy types!
- 64 all-new levels!
- Over 200 medals to obtain!

Controls:
- Both multitouch and tilt controls available, both can be used simultaneously
- Tilt controls: bullets shoot up, unless there's no gravity where you are
- Multi-target locking: double-tap the screen where you want to continue shooting
- Planet cannon: tap and drag from the planet to aim, release to fire
- Double-tap the planet to pause


* Seriously, there's a guy who told me he'd play it quietly in his pew waiting for church to start!
** It's the only game mode where you can have more than 0 lives at the end...

## Key features

- Planet cannon for mass enemy destruction
- Gauntlet mode to win the game
- Infinite-Classic and Infinite-Quickstart modes
- Level select with medal earning
- 74 global leaderboards
- Automatic save state
- Multi-touch and tilt controls

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Full Content | $1.99 | one-time |


## Recent user reviews (10 of 49)

All indexed reviews: https://appshunter.io/ios/app/blue-defense-second-wave/id389817492/reviews.md

### 5/5 — Great when it works, but crashes a lot.

*2023-11-18*

I've been playing in this series since I got the iPod touch second generation and have been a huge fan since then. Now I try to play it on my iPhone 6+ and it works, as long as it can get past the Game Center log in every time I open the app. Nine times out of ten, as soon as the little banner comes down from the top of the screen, the app crashes back to home screen. Once I can manage to get through that, I can usually get a good few minutes before it crashes again. The app needs an update for the newer software. This is the only problem I have found while trying to play. Fix it and I would give it five stars as it should have.

Edit: It does work now! Thank you!

**Developer response:** We’ve finally come back to maintain our old games!

Hopefully your crash bug has been fixed, let us know if it still happens for you.

### 5/5 — Long time devs.

*2019-03-31*

Good old games that keep getting updated to this day. Quite impressive! Most other games from this time don’t exist on the store anymore.

### 2/5 — Potential but broken

*2016-02-17*

Purchased based on strong recommendation. Second time loading, app crashes within seconds. Very disappointed.

**Developer response:** We’ve come back to maintain our games, a couple of crash bugs have been fixed. Let us know if it’s still broken for you!

### 4/5 — Great when it works, but crashes a lot.

*2015-12-18, version 1.0.3*

I've been playing in this series since I got the iPod touch second generation and have been a huge fan since then. Now I try to play it on my iPhone 6+ and it works, as long as it can get past the Game Center log in every time I open the app. Nine times out of ten, as soon as the little banner comes down from the top of the screen, the app crashes back to home screen. Once I can manage to get through that, I can usually get a good few minutes before it crashes again. The app needs an update for the newer software. This is the only problem I have found while trying to play. Fix it and I would give it five stars as it should have.

**Developer response:** We’ve finally come back to maintain our old games!

Hopefully your crash bug has been fixed, let us know if it still happens for you.

### 5/5 — Great update!

*2015-03-23*

Intense space shooter with lovely neon graphics. An impressive update to the best shmup on the iPhone.

### 1/5 — Mise à jour !!!

*2014-06-18*

Ne se lance plus !
Vite une mise à jour pour régler ça messieurs les développeurs !

**Developer response:** We’ve fixed our crashes - sorry it took so long!

### 5/5 — YEEEAAH!

*2013-12-12, version 1.0.2*

Making steps towards greatness! Eternally stupendous!

### 5/5 — Immer noch Klasse!

*2013-01-17*

Mittlerweile ist das Spiel ja eher ein iPhone Klassiker, aber ich liebe es immer noch, in der Frühzeit der iOS Devices war diese Art der Steuerung ja noch etwas völlig Neuartiges, geradezu ungesehen und genau Richtig um die Möglichkeiten des iPhones auszureizen, da haben die Leute aber mal Augen gemacht, Junge, Junge! Das war mal was anderes als so japanische Kreuz-Pad Steuerungen und sehr innovativ, allemal besser als die ganzen On-Screen-Joypad Steuerungen. Auch die Graphik ist außergewöhnlich schön, mit diesem leichten Glow um die Vektoren. Fazit: Immer noch Klasse! Schade das die anderen Spiele wie z. B. Blue Attack und das erste Blue Defense nicht mehr erhältlich sind...

### 3/5 — Unique?  No.  Entertaining?  Hardly.

*2012-11-13*

This is a perfect example of why I avoid buying games without a trial or free version to preview it. The game got boring after about 10 minutes. It's not horrible, but it's not particularly unique or imaginative.

### 2/5 — Good game, awkward controls

*2012-01-15*

This is a stylish game that plays pretty well... Except the main distinguishing element of the game - its control scheme - is unintuitive and uncomfortable. Rotating the tablet 360' to direct the main line of fire is awkward. Pressing to divide fire to other directions makes it even worse. I appreciate the novelty in deign, but don't enjoy the challenge of wrestling with a control scheme, so I'm not playing this one any more.

**Developer response:** We may be a bit late here, but it is now possible to disable accelerometer controls in the game optiions. Let us know if you have any other suggestions!

## Frequently asked questions about Blue Defense

### What is Blue Defense: Second Wave?

Blue Defense: Second Wave is an intense planetary defense arcade action game where players defend the Blue planet from Red and Green enemies using a powerful planet cannon. It builds on the gameplay of the original 2008 hit with new modes and features.

### What are the main game modes?

The game offers several modes including Gauntlet mode, where you can win the game, Infinite-Classic and Infinite-Quickstart modes for endless survival, and a Level select mode for practicing and earning medals.

### How much does Blue Defense: Second Wave cost?

The application is free to download and play, but it does include in-app purchases. This allows players to enhance their experience or acquire additional content within the game.

### What devices is Blue Defense: Second Wave compatible with?

The game features iPhone 4 Retina resolution graphics and is designed to run smooth and fast even on older devices. It also includes an automatic save state that works even without iOS 4.

### What are some of the unique features of this game?

Key features include a planet cannon that can take out hundreds of enemies at once, an all-new Gauntlet mode, 74 mode-based global leaderboards, and both multitouch and tilt controls that can be used simultaneously.

## Version history (last 5 releases)

### 2.0 — 2024-06-11

Classic mode is now free and quick start, gauntlet, and level selection modes can be unlocked. If you have previously purchased the app all content will remain unlocked.

### 1.1.11 — 2024-02-23

Share your score from the leaderboards screen for each level!

### 1.1.10 — 2023-06-26

Fixed menu titles

### 1.1.9 — 2023-05-07

Bug fixes

### 1.1.8 — 2022-05-12

Added sharing links.

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## More apps by Cat in a Box Software

- [Blue Defense!](https://appshunter.io/ios/app/blue-defense/id295528445)
- [Blue Attack!](https://appshunter.io/ios/app/blue-attack/id302278746)
- [Red Conquest!](https://appshunter.io/ios/app/red-conquest/id342960702)
- [Fastar!](https://appshunter.io/ios/app/fastar/id382072963)
- [Instant Sign](https://appshunter.io/ios/app/instant-sign/id574340515)

All apps by Cat in a Box Software: https://appshunter.io/developer/1600179204

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-18.*