Comparison

Space Cadet Defender vs Galaxy Invaders 2

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

Defend Earth from alien invaders in this fast-paced arcade shooter. Progress through 50 unique levels, upgrade your ship with powerful enhancements, and face off against challenging boss battles. Compete with friends by viewing local and world high scores.

Highlights
  • Fast-paced arcade gameplay
  • 50 unique levels
  • Ship upgrades
  • Boss battles
  • Unique power-ups
  • Score viewing
Features
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FEATURES: - Fast paced, exciting invaders style arcade game. - 50 Unique levels, can you pass them all? - Enhance your ship with powerful upgrades. - Boss levels with powerful Alien Overlords. - Unique powerups. - View friends scores, both local and world. - Save and restore in-progress games. These are troubling times. Earth’s very existence is threatened. Alien invaders from outer 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 as the fight progresses to defeat the increasingly advanced alien space craft. 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. You can do it, you are a Space Cadet!

About

Galaxy Invaders 2

Features
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The Galaxy's future is now in your hands. Take control of the spaceship and protect Earth from the galaxy invaders. In this Shoot ‘Em up game, you will be facing an increasingly large number of enemies in hazardous environments, and deal with many striker bosses in galaxy. As the game progresses, you will also earn gems to get more powerful spaceships. If you are a big fan of arcade shooting game like galaga, galaxia, galaxian, and galactica with the new modern combat, and want to bring the freedom in the galaxy games, so Galaxy Invaders 2 is perfect game for you. [HOW TO PLAY] - Touch and move to control your spaceship dodge enemy's bullets and attack the enemies. - Collect power-up items to upgrade or change your weapons. - Earn gems to get more powerful spaceships to fight with giant enemies and alien invaders. Get your ship ready in this arcade galaxy invader shooter game!

Screenshots

Space Cadet Defender4 screens
Galaxy Invaders 24 screens

Verdict

The call

The clearest difference is in-app purchases: Galaxy Invaders 2 at none against Space Cadet Defender's 8. Space Cadet Defender's advantage is ads (none vs shown) and update cadence (every 2 months vs every 32 months). On price 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

Both are free to download. Space Cadet Defender sells 8 one-off in-app purchases. Galaxy Invaders 2 asks for nothing beyond the download.

UpkeepUpdate frequency

Space Cadet Defender ships an update every 2 months, Galaxy Invaders 2 every 32 months. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 6 level
Space Cadet Defender versus Galaxy Invaders 2: the parameters behind the verdict, then further details
ParameterSpace Cadet DefenderGalaxy Invaders 2
PriceFreeFree
Rating4.2 (22 ratings) — better—
Positive reviews74.6% of reviews—
Number of ratings22 — better—
Update frequencyEvery 2 months — betterEvery 32 months
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS3.1 — better15.0
Further details — not scored
Size5 MB135 MB
Age rating4+4+
DeveloperSixHourSoft LLCTaiwei Chiu

In-app purchases

8 purchases

Space Cadet Defender

One-time8
  • Level Pack 1$0.99
  • Cannon Upgrade$0.99
  • Artillery Upgrade$0.99
Show 5 more
  • Shield Upgrade$0.99
  • Nuke Power Upgrade$0.99
  • Engine Speed Upgrade$0.99
  • Nuke Pack of 20$0.99
  • Extra Life$0.99
None

Galaxy Invaders 2

No in-app purchases

Questions

Is Space Cadet Defender free?
Space Cadet Defender is free to download, with in-app purchases available.
Is Galaxy Invaders 2 free?
Galaxy Invaders 2 is free to download, with no in-app purchases.
Do Space Cadet Defender or Galaxy Invaders 2 have ads?
Galaxy Invaders 2 shows ads; Space Cadet Defender does not.
Which is updated more often, Space Cadet Defender or Galaxy Invaders 2?
Space Cadet Defender ships an update every 2 months, and Galaxy Invaders 2 every 32 months. Most recently, Space Cadet Defender was updated on October 27, 2026 and Galaxy Invaders 2 on October 25, 2026.

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