Comparison

Stellar Stack Puzzle vs Universe Invader 2

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

Head to head
About

Stellar Stack Puzzle

Features
Read full description

Prepare for an exhilarating space adventure in this action-packed 2D shooter, where every battle pushes you closer to the stars. Take command of your ship and face waves of relentless enemies descending from above. As you blast through these sci-fi invaders, their defeated ships fall and stack up, creating a unique battlefield that rises with every victory. Your mission is simple yet challenging: reach the highest possible height, set new records, and survive epic boss fights. Choose from 5 powerful ships, each offering distinct abilities to suit your playstyle. As you progress, you'll unlock 5 different environments, or themes, each with its own unique aesthetic, adding variety and depth to your experience. The environments unlock automatically based on the time you spend playing, providing an ever-changing landscape for your space battles. Boosters are your key to survival when the odds are stacked against you. With 3 different types of power-ups at your disposal, you can quickly gain the upper hand in critical moments. Use these boosters strategically to blast through waves of enemies, defeat formidable bosses, and ascend to new heights. The in-game store allows you to spend the coins you earn from defeating enemies and completing missions. Unlock new ships to expand your fleet and purchase additional boosters to ensure you're always prepared for the next challenge. This progression system keeps the gameplay engaging and rewarding, as you continually strive to reach the maximum height and achieve new high scores. With its dynamic gameplay, sci-fi themes, and endless replayability, this 2D space shooter offers a thrilling experience for fans of arcade shooters, space combat games, and anyone looking for a fast-paced, action-packed adventure. Explore new galaxies, battle against fierce enemies, and see how far you can go in this ultimate space challenge. Download now and embark on your journey to the stars!

About

Universe Invader 2

Engage in intense space combat with powerful spacecraft against endless alien invaders. This premium version offers a full, uninterrupted arcade-style shooter experience with all content unlocked from the start. Enjoy fast-paced action, modern visuals, and challenging boss battles.

Highlights
  • Ad-free, uninterrupted gameplay
  • Full content unlocked
  • Classic arcade-style shooter
  • Intense boss battles
  • Offline play supported
  • Upgrade spacecraft and firepower
Features
Read full description

Universe Invader 2 (Premium) is the ultimate space shooter experience from the Universe Invaders series, designed for players who want pure gameplay without ads or interruptions. Take control of powerful spacecraft and fight endless waves of alien invaders across the galaxy. This premium version unlocks the full experience from the start, delivering fast-paced action, smooth controls, and visually stunning space battles. Premium Features - No ads - enjoy uninterrupted gameplay - Full content unlocked - access ships, upgrades, and stages without waiting - Classic arcade-style space shooter with modern visuals - Intense boss battles and challenging enemy waves - Offline play supported Epic Space Combat - Pilot advanced spacecraft with unique weapons - Upgrade firepower and defenses to survive harder missions - Explore multiple space environments and alien battlefields Built for Action Fans Universe Invaders (Premium) is perfect for fans of classic arcade shooters, bullet hell games, and sci-fi action. Every mission tests your reflexes, strategy, and shooting skills. Jump into the galaxy, dominate alien forces, and experience space combat at its finest - premium, complete, and ad-free.

Screenshots

Stellar Stack Puzzle4 screens
Universe Invader 24 screens

Verdict

The call

The clearest difference is price: Stellar Stack Puzzle at Free against Universe Invader 2's $0.99. Stellar Stack Puzzle also leads on iOS requirement (12.0 vs 15.0). Universe Invader 2's advantage is ads (none vs shown). On 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

Stellar Stack Puzzle is free to download; Universe Invader 2 costs $0.99 up front. Stellar Stack Puzzle sells 6 one-off in-app purchases and Universe Invader 2 sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Scorecard3 real differences · 7 level
Stellar Stack Puzzle versus Universe Invader 2: the parameters behind the verdict, then further details
ParameterStellar Stack PuzzleUniverse Invader 2
PriceFree — better$0.99
Rating—4.5 (8 ratings) — better
Positive reviews—50.0% of reviews
Number of ratings—8 — better
Update frequency—Every 6 months
AdsYesNo — better
In-app purchasesYesYes
Monetization—Paid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size124 MB384 MB
Age rating4+9+
DeveloperAreeb ZahidGcenter

In-app purchases

6 purchases

Stellar Stack Puzzle

One-time6
  • 2K Coins$1.99
  • 4K Coins$3.99
  • 8K Coins$4.99
Show 3 more
  • 12K Coins$8.99
  • 20K Coins$12.99
  • 35K Coins$14.99
10 purchases

Universe Invader 2

One-time10
  • Starter Pack$0.99
  • Instant Rank Up 2$1.99
  • Instant Rank Up 3$4.99
Show 7 more
  • Instant Rank Up 4$7.99
  • Instant Rank Up 5$9.99
  • Instant Rank Up 6$11.99
  • Instant Rank Up 7$14.99
  • Instant Rank Up 8$19.99
  • Instant Rank Up 9$24.99
  • Instant Rank Up 10$29.99

Questions

Is Stellar Stack Puzzle free?
Stellar Stack Puzzle is free to download, with in-app purchases available.
Is Universe Invader 2 free?
Universe Invader 2 costs $0.99, and also offers in-app purchases.
Do Stellar Stack Puzzle or Universe Invader 2 have ads?
Stellar Stack Puzzle shows ads; Universe Invader 2 does not.

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