OCO is a minimalist's dream. The circular level design is really clever and forces you to think about timing in a different way than standard 2D platformers. The 'one-button' controls are deceptively simple, but the puzzles quickly become complex as you deal with gravity and rotating hazards.
The best part of OCO is the community levels. There is a nearly endless supply of content, and the built-in level editor is surprisingly powerful. The soundtrack is also procedurally generated based on your actions, which makes every successful run sound like a unique piece of electronic music.
Version 2-2-08Wed Jan 04 2023
- 7000 hand-picked player-created levels
- Level sharing using OCO jpg levels system
- Level collections
- New colour schemes
- New achievements
“OCO is an exceptionally clever one-touch puzzle-platformer” 8/10 Pocket Gamer
“Gloriously addictive and intelligent puzzles” 8/10 Touch Arcade
Immerse yourself in the beautiful audio-visual world of OCO
Use simple one-touch controls to launch, rush, crash, glide, warp, and hang as you solve over 7000 fast-paced platforming puzzles
FEATURES
• Simple one-touch controls
• Complex challenging puzzles
• Precision platforming
• 7000 hand-selected player-created levels
• Create and share levels using OCO jpg levels system
• Beautiful minimal design
• Procedurally-generated soundtrack for every level
• Built-in editor
• Daily challenges
• 'Discord' community
• ‘Perfect solution’ challenges for all levels
• 46 achievements
AWARDS
• Finalist 'Pocket Gamer People’s Choice Award', 2020
• Runner-up ‘Big Indie Pitch’, Develop, Brighton, 2018
• Finalist ‘Very Big Indie Pitch’ Pocket Gamer Connects, London, 2017
Requires iOS 9.1 or later. Compatible with iPhone, iPad, and iPod touch.“OCO is an exceptionally clever one-touch puzzle-platformer” 8/10 Pocket Gamer
“Gloriously addictive and intelligent puzzles” 8/10 Touch Arcade
Immerse yourself in the beautiful audio-visual world of OCO
Use simple one-touch controls to launch, rush, crash, glide, warp, and hang as you solve over 7000 fast-paced platforming puzzles
FEATURES
• Simple one-touch controls
• Complex challenging puzzles
• Precision platforming
• 7000 hand-selected player-created levels
• Create and share levels using OCO jpg levels system
• Beautiful minimal design
• Procedurally-generated soundtrack for every level
• Built-in editor
• Daily challenges
• 'Discord' community
• ‘Perfect solution’ challenges for all levels
• 46 achievements
AWARDS
• Finalist 'Pocket Gamer People’s Choice Award', 2020
• Runner-up ‘Big Indie Pitch’, Develop, Brighton, 2018
• Finalist ‘Very Big Indie Pitch’ Pocket Gamer Connects, London, 2017




















OCO is a visually stunning, minimalist puzzle-platformer where you control a small square navigating circular, rotating worlds. With simple one-touch controls, you must time your jumps to collect yellow bits while avoiding red hazards. The game features 150 levels in its main campaign, a robust level editor, and a global community that has created thousands of additional challenges. The experience is heightened by a procedural soundtrack that reacts to your every move.
In OCO, momentum is everything. Use the rotation of the level to your advantage; sometimes jumping 'backwards' against the spin is the only way to reach higher platforms or avoid traps.
Tap the screen to jump as your character automatically moves along the rotating environment. Collect all bits in the fewest jumps possible to earn perfect scores.
Yes, OCO includes a full level editor that allows you to create, share, and play levels made by the community.