Comparison

Crazy Marbles vs O

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

Head to head
About

Crazy Marbles

A fast-paced puzzle game where players rotate wheels to guide marbles of the same color, triggering chain reactions. It offers increasingly challenging levels and global competition.

Highlights
  • Rotate wheels to guide marbles
  • Match same-colored marbles
  • Trigger explosive chain reactions
  • Innovative obstacles
  • Global competition and leaderboards
  • Optimized controls for iPhone and iPad
Features
Read full description

“Addictive, challenging, and utterly captivating! Crazy Marbles is a fast-paced game that’s incredibly easy to pick up but nearly impossible to put down.” — TAE23, Daily App Show “My absolute favorite! This game is both addicting and challenging, keeping me entertained for hours.” — Giljul, US “Even my wife is hooked! Fast, addictive, and the later levels are a real test of skill.” — Dtale, The Netherlands “Crazy Marbles is a stroke of genius. Completely addictive, I can’t get enough!” — Mrs. May, UK Now available on both iPhone and iPad! Experience Crazy Marbles in its full glory, whether you’re on the go or at home. The control scheme is optimized for each device: • iPad: Rotate the wheel by dragging or flicking it, and release marbles with a simple tap. • iPhone: Tap to rotate the wheel and drag the marbles in the direction you want to launch them. Gameplay: Rotate the wheels and guide your marbles in this high-energy game. Your goal? Fill the wheels with marbles of the same color to trigger explosive chain reactions. Once every wheel has exploded at least once, the level is complete. It sounds easy, but each level presents new and increasingly tricky challenges! With intuitive controls, you’ll effortlessly flick the wheels and tap to release marbles. But don’t be fooled by its simplicity—Crazy Marbles will test your split-second decision-making and strategic focus as you advance through its increasingly complex levels. Features: • Innovative Obstacles: Encounter fresh challenges that will keep you playing for hours. • Global Competition: Beat your own high scores and challenge your friends on Game Center. See how you rank against players worldwide. • Warning: This game is insanely addictive! Remember to take breaks—Crazy Marbles will be waiting for you when you return. Don’t lose your marbles—download Crazy Marbles today!

About

O

Navigate a spinning circle through challenging obstacles in this minimal action runner. Levels dynamically change direction and flip, testing your reflexes. Compete globally and unlock customizations.

Highlights
  • One-tap gameplay
  • Mind-bending geometry
  • Randomly generated levels
  • Chiptune soundtrack
  • Unlockable customizations
  • Global leaderboards
Features
Read full description

Jump into the spinning circle of O-VOID! In this super minimal action runner, you’ll be jumping over obstacles with the tap of a finger. But this is not a regular platformer! The entire level can change direction or flip upside down to throw you off. Are you skilled enough to survive every challenge? Features: • Simple one-tap gameplay inside mind-bending geometry • 7 randomly generated levels for endless replayability • Unique and pumping chiptune soundtrack • Near impossible challenges to unlock player customizations • Global leaderboards to compete with the world on

Screenshots

Crazy Marbles4 screens
O4 screens

Verdict

The call

The clearest difference is price: O at Free against Crazy Marbles's $0.99. O also leads on update cadence (weekly vs every 7 months) and ratings volume (191 vs 5). Crazy Marbles's advantage is in-app purchases (none vs 1) and ads (none vs shown). On review sentiment, device support and iOS requirement 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

O is free to download; Crazy Marbles costs $0.99 up front. O sells 1 one-off in-app purchase. Crazy Marbles asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Crazy Marbles holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: O has 191 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 78% of Crazy Marbles's written reviews are positive against 72% of O's.

UpkeepUpdate frequency

Crazy Marbles ships an update every 7 months, O weekly. The most recent releases landed on September 27, 2026 and October 13, 2026 respectively.

Scorecard7 real differences · 3 level
Crazy Marbles versus O: the parameters behind the verdict, then further details
ParameterCrazy MarblesO
Price$0.99Free — better
Rating5.0 (5 ratings) — better4.6 (191 ratings)
Positive reviews78.3% of reviews — better72.4% of reviews
Number of ratings5191 — better
Update frequencyEvery 7 monthsWeekly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size101 MB43 MB
Age rating4+4+
DeveloperRost SolutionsGearhead Games ApS

Customer experience

Crazy Marbles

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews23 reviews
Positive78.3%
Neutral13.0%
Negative8.7%

O

All ratings191 ratings
Positive90.6%
Neutral3.1%
Negative6.3%
Written reviews58 reviews
Positive72.4%
Neutral10.3%
Negative17.2%

Bugs and requests

Crazy Marbles

Not enough reviews yet to summarise bugs or requests.

O

Reported bugs

9 issues
  • Spinning makes users sick
  • Obstacles in later levels require luck/insane reaction time
  • Effect does not disappear properly in penultimate level
  • Game is glitchy, laggy, and unresponsive
  • Revive ad doesn't work/can't close ad
Show 4 more
  • Ads during gameplay cause freezes
  • Level 6 is impossible
  • Ads are annoying and unsolicited
  • Forced ads when choosing to restart

Requested features

6 requests
  • Add more levels
  • New dimension/different gameplay principle
  • User level creator
  • More beats/music synchronization
  • Option to turn down color brightness
Show 1 more
  • More publicity for leaderboards

In-app purchases

None

Crazy Marbles

No in-app purchases

1 purchases

O

One-time1
  • No Ads$2.99

Questions

Is Crazy Marbles free?
Crazy Marbles costs $0.99, with no in-app purchases.
Is O free?
O is free to download, with in-app purchases available.
Which has better reviews, Crazy Marbles or O?
Crazy Marbles is rated higher. Crazy Marbles averages 5.0 out of 5 from 5 ratings, while O averages 4.6 from 191 ratings.
Do Crazy Marbles or O have ads?
O shows ads; Crazy Marbles does not.
Which is updated more often, Crazy Marbles or O?
Crazy Marbles ships an update every 7 months, and O weekly. Most recently, Crazy Marbles was updated on September 27, 2026 and O on October 13, 2026.

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