Comparison

Blue Defense vs THUNDON

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

"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...

About

THUNDON

Features
Read full description

- Difficult Mode B There is also a mode with many different types of stuffed animals, Game B. - Elements of gameplay As you play through the game, you will unlock new characters that you can use. The rules are a little different for each character. - Recreating a nostalgic atmosphere The instructions that come with the electronic game reproduce the atmosphere of the time. In addition, you can play with deteriorating reflectors and polarizers. I hope you enjoy the nostalgic sense of play!

Screenshots

Blue Defense4 screens
THUNDON4 screens

Verdict

The call

The clearest difference is price: Blue Defense at Free against THUNDON's $0.99. Blue Defense also leads on update cadence (every 3 months vs every 10 months). THUNDON's advantage is in-app purchases (none vs 1) and iOS requirement (11.0 vs 16.0). On ads and device support 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

CostPrice · In-app purchases · Ads · Monetization

Blue Defense is free to download; THUNDON costs $0.99 up front. Blue Defense sells 1 one-off in-app purchase. THUNDON asks for nothing beyond the download.

UpkeepUpdate frequency

Blue Defense ships an update every 3 months, THUNDON every 10 months. The most recent releases landed on October 23, 2026 and October 27, 2026 respectively.

Scorecard4 real differences · 6 level
Blue Defense versus THUNDON: the parameters behind the verdict, then further details
ParameterBlue DefenseTHUNDON
PriceFree — better$0.99
Rating4.3 (20 ratings) — better—
Positive reviews81.6% of reviews—
Number of ratings20 — better—
Update frequencyEvery 3 months — betterEvery 10 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.011.0 — better
Further details — not scored
Size16 MB45 MB
Age rating9+4+
DeveloperCat in a Box SoftwareHideki Kubo

In-app purchases

1 purchases

Blue Defense

One-time1
  • Full Content$1.99
None

THUNDON

No in-app purchases

Questions

Is Blue Defense free?
Blue Defense is free to download, with in-app purchases available.
Is THUNDON free?
THUNDON costs $0.99, with no in-app purchases.
Do Blue Defense or THUNDON have ads?
Neither Blue Defense nor THUNDON shows ads.
Which is updated more often, Blue Defense or THUNDON?
Blue Defense ships an update every 3 months, and THUNDON every 10 months. Most recently, Blue Defense was updated on October 23, 2026 and THUNDON on October 27, 2026.

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