Comparison

SkyTower Challenge vs Alien Whack Attack

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

Head to head
About

SkyTower Challenge

Features
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SkyTower Challenge The gameplay is simple! This addictive game involves building blocks by tapping at the right moment. Your concentration and patience are needed to stack blocks higher. Compete with friends on the displayed leaderboard to challenge who can build the tallest tower!

About

Alien Whack Attack

Features
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Game Features • Simple Controls, Pure Fun Just tap the screen to play! The intuitive controls make it easy for anyone to jump right in. It’s perfect for quick breaks or relaxing moments—anytime, anywhere! • Unique Aliens & Scoring Strategy Different types of aliens appear at random, each giving you a different score when tapped. Will you aim for the rare, high-scoring aliens or build up your points steadily? But be careful: tapping the wrong targets, like animals, will cost you points! This fast-paced game challenges both your reflexes and your decision-making skills. The better you play, the more intense it gets—aliens pop out faster and in greater numbers! Stay sharp and keep your focus to stay in the game! • 3 Difficulty Levels & AI Battle Mode Choose from Easy, Normal, or Hard to suit your skill level. It’s great for both new players and seasoned pros! Plus, go head-to-head with AI opponents in an exciting challenge mode. Race for points in real-time and show off your skills! • Online Rankings Climb the global leaderboard and see how your reflexes measure up. Can you make it to the top? • Fun for All Ages With its cute design and simple controls, this game is fun for kids, teens, and adults alike! Perfect For: Those who love classic whack-a-mole games, are looking for a simple yet addictive game, want to test their reflexes and concentration, enjoy alien or space-themed games, or simply want to have fun during a short break. You’ll also love the intense battles against the AI! Free to Play! “Whack an Alien” is completely free to play (with optional ads). Just one game and you’ll be hooked! Tap those aliens and protect the planet with your trusty hammer! Notes • Fully playable offline • Internet connection required for rankings and online features • Please play safely—no real hammer-swinging, of course! Download now and become the ultimate Alien Defender!

Screenshots

SkyTower Challenge2 screens
Alien Whack Attack4 screens

Verdict

The call

The clearest difference is update cadence: SkyTower Challenge at every 2 weeks against Alien Whack Attack's every 5 weeks. Alien Whack Attack's advantage is iOS requirement (12.0 vs 15.0). On price, ads, 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

SkyTower Challenge ships an update every 2 weeks, Alien Whack Attack every 5 weeks. The most recent releases landed on October 3, 2026 and October 2, 2026 respectively.

Scorecard2 real differences · 4 level
SkyTower Challenge versus Alien Whack Attack: the parameters behind the verdict, then further details
ParameterSkyTower ChallengeAlien Whack Attack
PriceFreeFree
Update frequencyEvery 2 weeks — betterEvery 5 weeks
AdsYesYes
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size171 MB105 MB
Age rating4+4+
DeveloperTakuma TakahashiShinya Okubo

In-app purchases

None

SkyTower Challenge

No in-app purchases

None

Alien Whack Attack

No in-app purchases

Questions

Is SkyTower Challenge free?
SkyTower Challenge is free to download, with no in-app purchases.
Is Alien Whack Attack free?
Alien Whack Attack is free to download, with no in-app purchases.
Do SkyTower Challenge or Alien Whack Attack have ads?
Both SkyTower Challenge and Alien Whack Attack show ads.
Which is updated more often, SkyTower Challenge or Alien Whack Attack?
SkyTower Challenge ships an update every 2 weeks, and Alien Whack Attack every 5 weeks. Most recently, SkyTower Challenge was updated on October 3, 2026 and Alien Whack Attack on October 2, 2026.

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