circloO: Physics Platformer

Contains adsIn-app purchases
4.6
14.9K reviews
1M+
Downloads
Content rating
PEGI 3
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About this game

circloO is a colorful physics platformer in a growing circle. This app version contains all levels from circloO and circloO 2, plus brand-new bonus levels! There's also a level editor and already over 1500 levels created by players like you!

You're a small ball rolling around in a round level. Collect circles to grow the level circle. As it grows, everything stays in the level, so you'll have to avoid and use obstacles in everchanging ways. For example, a platform that was first very useful to gain height, may prove to be a challenging obstacle after the level has grown!

You can only move left and right, so you'll want to use features of the level carefully to jump and gain height. You'll discover all sorts of physics features, such as changing gravity, a sea of tiny blocks, strange contraptions and even planets with a gravity field. In challenging parts, you'll find yourself fully immersed, pressing the screen as hard as you can trying to get closer to finally collecting that next circle. But don't worry: you'll never have to start over a level, so you can always try again really quickly! And I can guarantee you'll feel amazing once you finally manage it! 😊

circloO Complete features:
- Lots of cool physics features: ropes, pulleys, changing gravity and much more! I've included quite a few mechanics for you to discover. 😃
- 53 fun, growing, ever more challenging levels! Can you complete the six almost-but-not-quite-impossible Hard Mode levels?
- All levels from circloO 2 and the original circloO, plus twelve brand-new levels!
- Unique physics puzzles in each level.
- Great music and sound effects by Stijn Cappetijn.
- Minimalist and colorful graphics.
- The game will take most players two to three hours to complete. Level times are saved, so you can try to beat your own highscores and speedrun levels after that!
- There's also a level editor!
- Relaxing yet challenging physics puzzle platforming fun!

I'm very happy that circloO 2 won the first Crazy Games developer contest out of 200 contestants! It was also third in the Kongregate contest of November 2018. You may remember it from CoolMath Games as well.

Reviews:
"It’s an excellent game that has a very playful and chilled out approach to the gameplay, whilst also featuring some wonderfully intricate level design. A very impressive puzzle platformer you’ll really want to roll with. Highly recommended." - Free Game Planet
"The difficulty scales upwards nicely and you're constantly rewarded for learning new skills as these always come up in future levels." - Jayisgames

The game contains occasional ads after a level, which can be removed with a one-time in-app purchase, which supports development as well.

Have fun and I'm happy to hear what you think!
Updated on
Mar 17, 2025
Available on
Android, Windows

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App activity, App info and performance, and Device or other IDs
This app may collect these data types
App activity, App info and performance, and Device or other IDs
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.6
14.5K reviews
Davin Callas
May 12, 2025
The game is great, the puzzles are fun, and the level editor is genuinely incredible, but how come your custom level is just deleted if your internet doesn't connect? like I had the level saved manually without Google play connecting, but it was just wiped without warning and I lost 4 days of work. Great game, but please fix this.
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David
April 25, 2025
Anti-elegant. The intended solutions feel awkward, forced, and unsatisfying. Feels like playing technically difficult Mario Maker levels rather than the main game. Vicerally unenjoyable.
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Zayan Pirzada
May 4, 2025
fun and relaxing the levels are well designed and there's no way to get stuck because the solutions are already well thought of amazing and underrated game
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What’s new

Thanks for playing circloO! This update adds a daily challenge to the player levels, and upgrades the level editor with the triangle generator and more.