Comparison

One More Line vs O

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

Head to head
About

One More Line

A highly addictive, one-button arcade game where players control a spaceship through a psychedelic disco-themed space. Master precise timing to navigate obstacles and achieve high scores in this challenging skill-based experience.

Highlights
  • One-button control
  • Skill-based timing gameplay
  • Addictive arcade experience
  • Psychedelic space disco theme
  • High score challenges
  • Easy to learn, hard to master
Features
Currently charting
Read full description

ONE MORE LINE is a highly addictive, one button, space disco, skill timing game! *** Over 5 million downloads worldwide*** Thanks for the support! ---------------------------------------------------------------------------- Score Register: <10: You're not trying 11-19: You can get that without even touching the screen 20-25: My mum can get that score 25-49: OK you're on the way 50-99: Respect! 100-199: Fist bump. You're good 200+: Whoa, nice work! 400+ Best in the world!!! ---------------------------------------------------------------------------- What people are saying "The game's so fun. I got everyone on the set hooked on it. It's a very easy game to learn, very hard game to master" Burnie: Rooster Teeth (Podcast #302) "It's finger crack!" Game Stitch Podcast "One More Line is viciousness without respite. A hardcore gaming experience" PocketGamer "An addictive time-waster perfect for downtime at the office or the daily commute" Techly.com "It's a twitchy arcade game that's something of a hybrid between the steering mechanic of slingshot racer and those rotating planet platformer games that are so darn popular." Toucharcade.com "SMG has got the formula precisely right. It's a fast, eye-catching game that's mechanically difficult, but the controls are simple and intuitive, so you never feel cheated, only beaten by your inability." ABC.net.au "An addictive and challenging yet deceptively simple arcade game" Jay is Games "One More Line is most entertaining single button game that I’ve encountered." superatomica.com "The controls are responsive and accurate, and if you have a good self-control, as well as a propensity for the psychedelic seventies, this could be the right game for you. 8/10" IGN Italia ---------------------------------------------------------------------------- Original music by Sydney composer Batterie: Listen / Buy here: http://batterie.com.au/listen/

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

One More Line4 screens
O4 screens

Verdict

The call

The clearest difference is ads: One More Line at none against O's shown. One More Line also leads on chart position (#159 vs unranked) and ratings volume (891 vs 191). O's advantage is review sentiment (72% vs 45%) and update cadence (weekly vs every 3 weeks). On price, rating, in-app purchases and monetization model 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. One More Line sells 1 one-off in-app purchase and O sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for One More Line against 4.6 for O. Both are backed by a comparable volume of ratings — 891 and 191 respectively. Written reviews are what separate them: 45% of One More Line's written reviews are positive against 72% of O's.

UpkeepUpdate frequency

One More Line ships an update every 3 weeks, O weekly. Both last shipped on October 17, 2026.

Scorecard6 real differences · 5 level
One More Line versus O: the parameters behind the verdict, then further details
ParameterOne More LineO
PriceFreeFree
Rating4.5 (891 ratings)4.6 (191 ratings) — better
Positive reviews45.3% of reviews72.4% of reviews — better
Number of ratings891 — better191
Update frequencyEvery 3 weeksWeekly — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#159 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS6.0 — better13.0
Further details — not scored
Size123 MB43 MB
Age rating4+4+
DeveloperSMG StudioGearhead Games ApS

Customer experience

One More Line

All ratings891 ratings
Positive86.3%
Neutral6.3%
Negative7.4%
Written reviews596 reviews
Positive45.3%
Neutral15.4%
Negative39.3%

O

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

User reviews

One More Line

From 891 App Store ratings

What we love

  • 🚀 Simple but engrossing
  • 👍 Great game
  • 👍 Addictive
  • 👍 Fun and addictive
  • 👍 Awesome!

Room to improve

  • 🐛 Laggy
  • 🐛 Glitchy
  • 🐛 Outdated
  • 🐛 Crashes
  • 🐛 Grappling issues

O

From 191 App Store ratings

What we love

  • 🎶 Great music/soundtrack
  • 🎮 Challenging and satisfying gameplay
  • 💡 Innovative game mechanics
  • 💯 High skill ceiling/mastery
  • ✨ Simple yet addictive

Room to improve

  • 😵 Dizzying/makes users sick
  • 🥵 Extremely difficult/too hard
  • ⏳ Too short/lacks content
  • 😵‍💫 Trippy and weird visuals
  • 🤢 Makes users feel sick

Bugs and requests

One More Line

Reported bugs

5 issues
  • Grappling issues
  • Crashes on launch
  • Achievements/leaderboards not working
  • Compatibility issues with newer devices
  • Ads causing crashes/freezes

Requested features

7 requests
  • Unlock achievements
  • Leaderboards
  • Customization options
  • Difficulty modes
  • Themes
Show 2 more
  • Coin/currency system
  • Ability to save/view patterns

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

1 purchases

One More Line

One-time1
  • Remove Ads$1.99
1 purchases

O

One-time1
  • No Ads$2.99

Questions

Is One More Line free?
One More Line is free to download, with in-app purchases available.
Is O free?
O is free to download, with in-app purchases available.
Which has better reviews, One More Line or O?
O is rated higher. One More Line averages 4.5 out of 5 from 891 ratings, while O averages 4.6 from 191 ratings.
Do One More Line or O have ads?
O shows ads; One More Line does not.
Which is updated more often, One More Line or O?
One More Line ships an update every 3 weeks, and O weekly. Most recently, One More Line was updated on October 17, 2026 and O on October 17, 2026.

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