Blue Defense vs .Decluster
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Blue Defense
Defend your planet from alien invaders using a powerful cannon. Engage in intense arcade action with various game modes, leaderboards, and unlockable content. Enjoy updated retro graphics and flexible controls.
- 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
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"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...
.Decluster
Engage in a vertically scrolling 2D shooter with simple controls and graphics. Dodge waves of bullets and enemies while firing a powerful homing laser to clear your path and earn bonuses. Offers multiple difficulty levels and customizable settings for an accessible bullet-hell experience.
- Simple two-finger controls
- Homing laser with bullet canceling
- Automatic basic shots
- Small player hitbox
- Game speed slowdown with many bullets
- Four difficulty levels
- Adjustable game view and touch sensitivity
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Simple controls and simple graphics. A mass of bullets and enemies. All you need is just to dodge and to fire. Enjoy your bullet-hell life. #################################### # DEVICE REQUIREMENTS # # iPhone 5 or later # iPad Air or later #################################### .Decluster (dot decluster) is a vertically scrolling 2D shooter game (shmup). The controls you need are just two. To move your ship and to fire the homing laser. Because it is designed for mobile devices, you can control easily on the iPhone / iPad. Slide your finger anywhere on the screen to move your ship. The relative touch movement is adopted. And tap second finger to fire the homing laser. Basic shots are automatic. The homing laser is powerful activity and is also a key to surviving. The homing laser requires the gauge of it at least 1 Lv. The moment the homing laser was fired, bullets around your ship are canceled and get cancel bonuses. This is so important. Don't forget it. The player's unhitting box is very small. It is displayed as a white rectangle in the center of the ship. And when a lot of bullets appear, the game-speed gets slowdown. Therefor you can keep surviving more than meets the eye. Four different difficulties. From beginner to expert. The novice difficulty has some benefits from the start. Extra options and extra lives. If you are beginner fun of shooter, the novice difficulty is a good choice. In the settings, you can adjust the size of game view and you can also adjust the touch sensitivity for slide control. If it is hard to see the screen because of your finger, or you have incongruous with the slide control, then try to adjust them. From version 2.0.1, the boss battle mode was added. HOW TO PLAY ======================================== ## Basics - Slide one finger to move the Player. - The Player automatically fires. ## Homing Laser - Tap second finger to fire the Homing Laser. - The Homing Laser will target at the nearest Enemy. ## Homing Laser Gauge - The Homing Laser can be fired when the gauge is enough. - The gauge is filled by shooting enemies or collecting items. ## Homing Laser Tips - The moment the Homing Laser was fired, bullets around the Player are canceled. - And cancel bonuses are obtained. ## Homing Laser Tips+ - The more gauge is the larger cancel range. - The more bullets are canceled, the more bonuses are obtained. ## Items - Collect items to obtain score and fill the Homing Laser Gauge. - Option items are alternately switched to each other every 5 sec. ## Tips - The higher bonuses are obtained by faster destroy enemies. - Additional bonuses by the Homing Laser. - Extra life every 3,000,000 pt. #################################### # DEVICE REQUIREMENTS # # iPhone 5 or later # iPad Air or later ####################################
Screenshots
Verdict
The clearest difference is in-app purchases: .Decluster at none against Blue Defense's 1. .Decluster also leads on rating (4.5 vs 4.3) and update cadence (every 5 weeks vs every 3 months). On price, review sentiment, ratings volume and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Blue Defense sells 1 one-off in-app purchase. .Decluster asks for nothing beyond the download.
.Decluster holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 20 and 27 respectively. Written reviews point the same way: 82% of Blue Defense's written reviews are positive against 86% of .Decluster's.
Blue Defense ships an update every 3 months, .Decluster every 5 weeks. The most recent releases landed on September 21, 2026 and August 26, 2026 respectively.
| Parameter | Blue Defense | .Decluster |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (20 ratings) | 4.5 (27 ratings) — better |
| Positive reviews | 81.6% of reviews | 86.2% of reviews — better |
| Number of ratings | 20 | 27 — better |
| Update frequency | Every 3 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 8.0 — better |
| Further details — not scored | ||
| Size | 16 MB | 54 MB |
| Age rating | 9+ | 9+ |
| Developer | Cat in a Box Software | MASAYUKI ITO |
Customer experience
Blue Defense
.Decluster
In-app purchases
Blue Defense
- Full Content$1.99
.Decluster
No in-app purchases









