Comparison

Space Cadet Defender HD vs Galaxy Attack

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

Head to head
About

Space Cadet Defender HD

Defend Earth from an alien invasion in this fast-paced arcade space shooter. Upgrade your ship with powerful enhancements and conquer over 150 unique levels, including challenging boss battles. Compete for high scores and save your progress.

Highlights
  • HD retina graphics
  • 150+ unique levels
  • Ship upgrades
  • Boss levels
  • Unique powerups
  • GameCenter high scores
Features
Read full description

Defend Earth from the Alien Horde in this arcade/action space shooter. * WHAT'S NEW: HD graphics for retina screens, new levels, new ship upgrades. FEATURES: - High Definition retina graphics enhanced for the new iPad and iPhone. - Fast paced, exciting invaders style arcade game. - 150+ Unique levels, can you pass them all? - Enhance your ship with powerful upgrades. - Boss levels with powerful Alien Overlords. - Unique powerups. - High scores via GameCenter. - Save and restore in-progress games. STORY: These are troubling times. Earth’s very existence is threatened. Alien invaders from space have been sent to destroy our planet. You have been called up to repel their attack. You must plan your battle strategy well and upgrade your fighter ship to defeat the increasingly advanced aliens. Beware, their powerful overlords are watching and will join the fight to help the alien forces destroy us. We’re counting on you. Earth is counting on you. Suit up Space Cadet!

About

Galaxy Attack

Engage in an intense space battle as a warrior defending the galaxy from alien invaders. Use your energy ball and arsenal to destroy enemy ships, collect power-ups, and defeat formidable boss vessels. Immerse yourself in mesmerizing interstellar environments and prove your skills to save the universe.

Highlights
  • Space warrior role
  • Energy ball weapon
  • Power-up collection
  • Boss ship battles
  • Interstellar environments
  • Level progression
Features
Read full description

Welcome to an exhilarating interstellar adventure! In this action-packed game, you'll take on the role of a brave space warrior, armed with an energy ball and a powerful arsenal of weapons. Your mission? To defend the galaxy against a fleet of menacing alien spaceships. As you embark on your journey, you'll encounter waves of enemy spacecraft, each more challenging than the last. Your trusty energy ball will be your primary tool for destruction. Launch it strategically to break apart the enemy ships, aiming to dismantle them piece by piece. With each successful hit, the fragments will scatter, weakening the enemy's defense and bringing you closer to victory. But it's not just about raw firepower. To enhance your fighting capabilities, you can collect coins scattered throughout the battlefield. These valuable coins can be exchanged for power-ups, granting you additional abilities and boosting your chances of success. Whether it's a shield to protect you from enemy fire, the power-ups will give you the edge you need in this cosmic showdown. While most enemy ships can be dispatched with skill and precision, beware of the formidable boss ships that will occasionally emerge. These colossal vessels are equipped with powerful weapons and, making them incredibly challenging to defeat. However, with quick reflexes, strategic thinking, and the right combination of power-ups, you can overcome these imposing adversaries and claim victory. Prepare yourself for an immersive and intense gaming experience as you navigate through mesmerizing interstellar environments. With each level you conquer, and the battles will become more intense. Will you have what it takes to emerge as the ultimate space warrior and save the galaxy from the clutches of the alien invaders? Gather your wits, hone your skills, and embark on this epic space adventure. The fate of the universe rests in your hands!

Screenshots

Space Cadet Defender HD4 screens
Galaxy Attack4 screens

Verdict

The call

The clearest difference is rating: Galaxy Attack at 5.0 against Space Cadet Defender HD's 4.4. Galaxy Attack also leads on update cadence (daily vs every 2 months). Space Cadet Defender HD's advantage is ratings volume (468 vs 4) and iOS requirement (8.0 vs 12.0). On price, ads, in-app purchases and monetization model 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

Both are free to download. Space Cadet Defender HD sells 6 one-off in-app purchases and Galaxy Attack sells 9 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Galaxy Attack holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Space Cadet Defender HD has 468 ratings behind it against 4, so its average is the more settled of the two.

UpkeepUpdate frequency

Space Cadet Defender HD ships an update every 2 months, Galaxy Attack daily. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
Space Cadet Defender HD versus Galaxy Attack: the parameters behind the verdict, then further details
ParameterSpace Cadet Defender HDGalaxy Attack
PriceFreeFree
Rating4.4 (468 ratings)5.0 (4 ratings) — better
Positive reviews76.0% of reviews—
Number of ratings468 — better4
Update frequencyEvery 2 monthsDaily — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better12.0
Further details — not scored
Size28 MB64 MB
Age rating4+4+
DeveloperSixHourSoft LLCHoang Thi Na

Customer experience

Space Cadet Defender HD

All ratings468 ratings
Positive85.9%
Neutral5.3%
Negative8.8%
Written reviews217 reviews
Positive76.0%
Neutral7.4%
Negative16.6%

Galaxy Attack

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Space Cadet Defender HD

Reported bugs

3 issues
  • Crashes on certain devices
  • Progression loss when resetting game
  • Unresponsive controls

Requested features

4 requests
  • More levels and content
  • Level selection or reset option
  • Improved controls and responsiveness
  • Ability to replay completed levels

Galaxy Attack

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

Space Cadet Defender HD

One-time6
  • 5000 Medals$0.99
  • Second Invasion$1.99
  • Third Invasion$1.99
Show 3 more
  • 30000 Medals$4.99
  • 70000 Medals$9.99
  • 140000 Medals$14.99
9 purchases

Galaxy Attack

One-time9
  • 1000 Coins$0.99
  • RemoveAds$1.99
  • Zenmode$1.99
Show 6 more
  • 3150 Coins$2.99
  • RemoveAds Plus$3.99
  • 5500 Coins$4.99
  • Increase MaxLives from 2 to 5$5.99
  • 12000 Coins$9.99
  • 39000 Coins$29.99

Questions

Is Space Cadet Defender HD free?
Space Cadet Defender HD is free to download, with in-app purchases available.
Is Galaxy Attack free?
Galaxy Attack is free to download, with in-app purchases available.
Which has better reviews, Space Cadet Defender HD or Galaxy Attack?
Galaxy Attack is rated higher. Space Cadet Defender HD averages 4.4 out of 5 from 468 ratings, while Galaxy Attack averages 5.0 from 4 ratings.
Do Space Cadet Defender HD or Galaxy Attack have ads?
Neither Space Cadet Defender HD nor Galaxy Attack shows ads.
Which is updated more often, Space Cadet Defender HD or Galaxy Attack?
Space Cadet Defender HD ships an update every 2 months, and Galaxy Attack daily. Most recently, Space Cadet Defender HD was updated on October 23, 2026 and Galaxy Attack on October 24, 2026.

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