Comparison

Knock Fever vs Bubble Surge!

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

Head to head
About

Knock Fever

Aim your cannon precisely to blast down colorful towers in this physics-based destruction game. Enjoy hundreds of satisfying levels with simple controls and spectacular chain reactions. Become the ultimate cannon champion by strategically knocking down every structure.

Highlights
  • Physics-based destruction
  • Hundreds of unique levels
  • Satisfying chain reactions
  • Simple aim and shoot controls
  • Colorful tower smashing
  • Rewarding challenges
Features
Read full description

Ready to bring down every tower with the perfect shot? Load your cannon, take aim, and blast your way through hundreds of satisfying levels in Knock Fever! Every shot matters as you knock down colorful structures, trigger explosive chain reactions, and watch towers collapse in spectacular fashion. Simple to learn, challenging to master—can you become the ultimate cannon champion? Blast Towers with Precision Every level presents a unique structure waiting to be destroyed. Aim carefully, find the weakest point, and fire your cannon to bring everything crashing down. Satisfying Destruction Experience realistic physics as towers collapse, blocks tumble, and perfectly placed shots create huge chain reactions. Every successful hit is incredibly satisfying. Hundreds of Unique Levels Face a variety of creative tower layouts that require different strategies. As the challenge grows, you'll need sharper aim and smarter shots to clear every stage. Easy Controls Simply aim, shoot, and watch the action unfold. Whether you have a few minutes or a long gaming session, Knock Fever is easy to pick up and impossible to put down. Why You'll Love Knock Fever • Fun and satisfying cannon gameplay • Colorful tower-smashing action • Physics-based destruction mechanics • Easy controls with rewarding challenges • Hundreds of handcrafted levels • Smooth animations and exciting effects • Perfect for quick, relaxing gameplay sessions Do you have what it takes to knock down every tower? Grab your cannon, line up the perfect shot, and start blasting your way to victory in Knock Fever!

About

Bubble Surge!

Read full description

Bubble Surge is a fast, addictive arcade game. Tap the right number in the right color before the clock runs out, chain hits to build combos, and climb through 20 escalating levels. Post your score to a live global leaderboard ranked daily, weekly, and all-time, and grab a Daily Boost to start a run with extra lives. Simple to pick up, tough to master. Free to play.

Screenshots

Knock Fever4 screens
Bubble Surge!4 screens

Verdict

The call

The clearest difference is in-app purchases: Bubble Surge! at none against Knock Fever's 10. On price, update cadence, ads 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. Knock Fever sells 10 one-off in-app purchases. Bubble Surge! asks for nothing beyond the download.

UpkeepUpdate frequency

Knock Fever ships an update weekly, Bubble Surge! every 5 days. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

Scorecard1 real difference · 9 level
Knock Fever versus Bubble Surge!: the parameters behind the verdict, then further details
ParameterKnock FeverBubble Surge!
PriceFreeFree
Rating4.7 (11K ratings) — better—
Positive reviews54.1% of reviews—
Number of ratings11K — better—
Update frequencyWeeklyEvery 5 days — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size607 MB7 MB
Age rating12+4+
DeveloperKite GamesKIBU Global Ventures LLC

In-app purchases

10 purchases

Knock Fever

One-time10
  • Starter Bundle$1.99
  • 1000 Coins Pack$1.99
  • Mini Bundle$4.99
Show 7 more
  • No Ads$7.99
  • 5000 Coins Pack$7.99
  • Premium Bundle$9.99
  • 10000 Coins Pack$14.99
  • Deluxe Bundle$19.99
  • 25000 Coins Pack$29.99
  • Mega Bundle$49.99
None

Bubble Surge!

No in-app purchases

Questions

Is Knock Fever free?
Knock Fever is free to download, with in-app purchases available.
Is Bubble Surge! free?
Bubble Surge! is free to download, with no in-app purchases.
Do Knock Fever or Bubble Surge! have ads?
Both Knock Fever and Bubble Surge! show ads.
Which is updated more often, Knock Fever or Bubble Surge!?
Knock Fever ships an update weekly, and Bubble Surge! every 5 days. Most recently, Knock Fever was updated on November 8, 2026 and Bubble Surge! on October 31, 2026.

Other comparisons