Comparison

UnderAttack vs Alien Barrage

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

Head to head
About

UnderAttack

Features
Read full description

Defend Earth from alien invasion! Command powerful starships, upgrade devastating weapons, and face epic boss battles across 10 chapters. Easy to learn, impossible to master. Join the fight and become the hero Earth needs! INTENSE SPACE COMBAT • Fast-paced tower defense shooter with smooth touch controls • Dynamic enemy spawn patterns keep you on your toes • Strategic buff system for tactical decisions during missions • Adaptive difficulty that adjusts to your skill level DEEP UPGRADE SYSTEM • Unlock 7 legendary captains with unique combat abilities • 5 weapon types: Cannon, Laser, Missile, Freeze Ray, Chain Lightning • Strategic temporary buffs: shields, damage boost, critical hits • Collect and upgrade 6 different starship classes • Each ship has unique stats and weapon slots EPIC BOSS BATTLES • 50 boss battles across 10 unique planets • Each boss has distinct attack patterns and strategies • Massive capital ships and alien motherships • Challenging boss stages with fewer but stronger enemies PROGRESSION & COLLECTION • 250 stages across 10 planets (25 levels per planet) • 7 legendary captains with unique abilities: - Nova: Damage specialist - Vex: Critical hit master - Iron: Defensive tank - Blaze: Speed demon - Phantom: Stealth striker - Zeus: Lightning lord - Omega: Ultimate commander • Strategic buff system with 15+ temporary upgrades • Data currency for tactical decisions during missions • Adaptive difficulty adjusts based on your performance WHAT PLAYERS SAY "Best mobile space shooter I've played this year!" - 5 stars "Perfect balance of challenge and casual fun" - 5 stars "Finally a shooter that doesn't force ads!" - 5 stars 100% FREE TO PLAY • Download and play completely free forever • Optional in-app purchases for faster progression • No forced ads - watch for bonus rewards only • Full offline play support - no internet required • Fair difficulty with adaptive assistance for struggling players PREMIUM FEATURES • Stunning particle effects and explosions • Original sci-fi soundtrack and sound design • Regular content updates with new chapters and captains • Cloud save - seamlessly play across devices • Optimized for all iOS devices and tablets • Portrait and landscape mode support • One-handed gameplay option PERFECT FOR • Fans of classic arcade space shooters and tower defense games • Players who love boss battles and strategy • Anyone seeking quick 5-10 minute gaming sessions • Collectors who enjoy unlocking characters and ships • Casual and hardcore gamers alike REGULAR UPDATES • New chapters released quarterly • Weekly balance updates based on player feedback • Monthly events with exclusive rewards • Active development team listening to community Join the battle today! Download Under Attack: Idle TD and become the hero Earth needs. Command your fleet, upgrade your arsenal, and prove you're the galaxy's greatest defender!

About

Alien Barrage

Defend Earth from relentless alien invaders in this fast-paced retro arcade shooter. Dodge plasma, collect powerups, and survive challenging boss battles. Compete on global leaderboards for the highest score and wave survived.

Highlights
  • Touch-and-drag controls with automatic firing
  • Endless escalating waves of alien enemies
  • Bonus Rounds and Boss Battles
  • Collectible powerups and screen-clearing bombs
  • Unlockable ships and difficulty modes
  • Game Center leaderboards and achievements
Features
Read full description

Defend Earth from endless alien waves in this fast-paced retro arcade shooter. Collect powerups, survive boss battles, and climb the global leaderboards. Touch and drag to move your ship while it fires automatically, dodge incoming plasma, and clear wave after wave of invading aliens before they reach the bottom. What starts as a classic arcade battle quickly escalates into a tougher survival challenge, with faster enemies, more pressure, and bigger rewards the longer you last. Alien Barrage mixes traditional formation-based waves with special events that keep every run fresh. Every 4th level is a Bonus Round, where aliens break formation and streak across the screen in unpredictable patterns for extra points. Every 7th level is a Boss Level, featuring a massive enemy that absorbs heavy damage, fires missiles, and gets tougher each time it returns. Powerups can turn the tide in an instant. Collect Rapid Fire to double your fire rate, Spread Shot to blast multiple enemies at once, Shield to absorb a hit, and Extra Life to stay in the fight longer. When things get desperate, unleash a bomb to clear the screen and save your run. Choose how you want to play with Easy, Normal, and Hard difficulty modes, each offering a different challenge level and score potential. Fly the default Classic Ship or unlock the Dual Cannon ship for permanent double firepower. Compete on Game Center leaderboards for top score and highest wave survived, challenge your friends, and unlock achievements as you play. Whether you want a quick arcade session or a long high-score grind, Alien Barrage delivers classic shooter action with modern progression and competitive replay value. Features: - Touch-and-drag controls with automatic firing - Endless escalating waves of alien enemies - Bonus Rounds every 4th level - Boss battles every 7th level - UFO encounters, swooping aliens, and missile attacks - Four powerups: Rapid Fire, Spread Shot, Shield, and Extra Life - Screen-clearing bombs for clutch moments - Classic Ship plus unlockable Dual Cannon ship - Game Center leaderboards and achievements - Three difficulty modes for casual play or hardcore score chasing

Screenshots

UnderAttack4 screens
Alien Barrage4 screens

Verdict

The call

The clearest difference is ads: Alien Barrage at none against UnderAttack's shown. On price, update cadence, in-app purchases 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. UnderAttack sells 9 one-off in-app purchases and Alien Barrage sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

UnderAttack ships an update every 4 months, Alien Barrage every 3 months. The most recent releases landed on October 6, 2026 and October 5, 2026 respectively.

Scorecard1 real difference · 8 level
UnderAttack versus Alien Barrage: the parameters behind the verdict, then further details
ParameterUnderAttackAlien Barrage
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 4 monthsEvery 3 months — better
AdsYesNo — better
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.4 — better17.6
Further details — not scored
Size88 MB45 MB
Age rating4+12+
DeveloperOGULCAN SACLIarnold biffna

In-app purchases

9 purchases

UnderAttack

One-time9
  • 50 Gem$0.99
  • 130 Gem$1.99
  • Starter Pack$2.99
Show 6 more
  • Adventurer Bundle$4.99
  • 350 Gem$4.99
  • 650 Gem$7.99
  • Veteran Pack$9.99
  • Dreadnought$9.99
  • 1500 Gem$14.99
6 purchases

Alien Barrage

One-time6
  • 3 Revives$0.99
  • 10 Revives$1.99
  • 10 Extra Bombs.$1.99
Show 3 more
  • Dual Shooter Ship$2.99
  • 40 revives$4.99
  • 100 Revives$9.99

Questions

Is UnderAttack free?
UnderAttack is free to download, with in-app purchases available.
Is Alien Barrage free?
Alien Barrage is free to download, with in-app purchases available.
Do UnderAttack or Alien Barrage have ads?
UnderAttack shows ads; Alien Barrage does not.
Which is updated more often, UnderAttack or Alien Barrage?
UnderAttack ships an update every 4 months, and Alien Barrage every 3 months. Most recently, UnderAttack was updated on October 6, 2026 and Alien Barrage on October 5, 2026.

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