Comparison

Helix Protocol vs Galaxy Alien Space Attack

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

Head to head
About

Helix Protocol

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When humanity faced the threat of an alien invasion, Earth’s last line of defense was activated — the Helix Protocol. - The Immortal Warrior - You are a clone, reborn after every death through advanced consciousness and memory replication. Each defeat makes you stronger. - Progress Through Experience - The system analyzes your performance and rewards you with credits. Use them to upgrade your ship and unlock its full potential. Tactical Energy Management: Redirect power between shields, weapons, and engines to adapt to the evolving threats in battle. - Ship Customization - Tune your ship to match your playstyle and gain a strategic advantage. - Global Pilot Rankings - Compete with other players on the leaderboard that reflects your achievements in combat. Helix Protocol is more than survival. It’s a journey of evolution, relentless improvement, and resistance. Prove you’re not just a survivor — turn every defeat into experience, and every victory into a new era in the war for Earth’s future.

About

Galaxy Alien Space Attack

Features
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Take control of a powerful fighter and defend the galaxy against endless waves of alien enemies! Galaxy Alien Space Attack is an exciting arcade shooting game inspired by classic space shooters with modern graphics, smooth controls, and intense bullet hell action. Fly through deep space, dodge enemy attacks, destroy alien fleets, and challenge massive boss battles. Upgrade your spaceship with powerful weapons, missiles, lasers, shields, and special abilities to survive increasingly difficult missions. Game Features: • Fast-paced arcade shooter gameplay • Beautiful sci-fi space environments • Epic boss fights • Multiple fighter upgrades • Powerful weapons and special skills • Smooth one-finger controls • Offline play anytime • Optimized for phones and tablets Whether you enjoy retro arcade games, classic space shooters, or modern bullet hell adventures, this game delivers nonstop action and exciting combat. Test your reflexes, collect upgrades, unlock stronger fighters, and become the ultimate galaxy defender. Download now and begin your space battle against the alien invasion!

Screenshots

Helix Protocol4 screens
Galaxy Alien Space Attack3 screens

Verdict

The call

The clearest difference is in-app purchases: Galaxy Alien Space Attack at none against Helix Protocol's 7. Galaxy Alien Space Attack also leads on update cadence (daily vs every 3 weeks) and device support (3 vs 1). On price 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Helix Protocol sells 7 one-off in-app purchases. Galaxy Alien Space Attack asks for nothing beyond the download.

UpkeepUpdate frequency

Helix Protocol ships an update every 3 weeks, Galaxy Alien Space Attack daily. The most recent releases landed on September 21, 2026 and August 2, 2026 respectively.

Scorecard4 real differences · 2 level
Helix Protocol versus Galaxy Alien Space Attack: the parameters behind the verdict, then further details
ParameterHelix ProtocolGalaxy Alien Space Attack
PriceFreeFree
Update frequencyEvery 3 weeksDaily — better
AdsYesYes
In-app purchasesYesNo — better
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.013.0 — better
Further details — not scored
Size45 MB87 MB
Age rating9+4+
DeveloperOleksii Poliakov刚 曾

In-app purchases

7 purchases

Helix Protocol

One-time7
  • 50K Credits$2.99
  • 125K Credits$5.99
  • 175K Credits$8.99
Show 4 more
  • 250K Credits$12.99
  • 500K Credits$19.99
  • 750K Credits$24.99
  • 1M Credits$29.99
None

Galaxy Alien Space Attack

No in-app purchases

Questions

Is Helix Protocol free?
Helix Protocol is free to download, with in-app purchases available.
Is Galaxy Alien Space Attack free?
Galaxy Alien Space Attack is free to download, with no in-app purchases.
Do Helix Protocol or Galaxy Alien Space Attack have ads?
Both Helix Protocol and Galaxy Alien Space Attack show ads.
Which is updated more often, Helix Protocol or Galaxy Alien Space Attack?
Helix Protocol ships an update every 3 weeks, and Galaxy Alien Space Attack daily. Most recently, Helix Protocol was updated on September 21, 2026 and Galaxy Alien Space Attack on August 2, 2026.

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