circloO - Physics Platformer

Contains adsIn-app purchases
4.54K reviews
Content rating
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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!

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 eight 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!
- 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.

"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
Apr 7, 2022

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
Location, App activity and 2 others
This app may collect these data types
Location, App activity and 2 others
Data is encrypted in transit
You can request that data be deleted
4.54K reviews
Jennifer Jenks
March 27, 2022
This game is amazing. The puzzles are imaginative and interesting, the game physics give you a new aspect to contend with as soon as you figure out the last one, and the calm and beautiful music helps mellow the frustration as you just barely miss your home for the 10th time in a row. Wonderfully original, I can't wait to see more from this developer. Thank you ♡
94 people found this review helpful
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Jabber Cookie
April 12, 2022
I feel obligated to rate this because this is the only mobile game I've completed and uninstalled feeling completely satisfied with the experience. I got stuck and frustrated sometimes, but I could find walkthroughs easily and was able to figure it out eventually. The only problem was that the controls didn't seem sensitive enough, so it was a bit hard to move precisely. Overall, this was a pretty good short game. 😃
33 people found this review helpful
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AwesomeTurtle 70
January 20, 2022
this game has a simple formula, but it really gets a lot out of it the level design consistently introduces new concepts and remains challenging also, this game doesnt flood you with ads, unlike some other games my only complaint is that it doesn't save your progress through the level, but this isnt much of an issue because once you know what to do in the level you can get back to your spot quickly overall, i highly recommend this game
37 people found this review helpful
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What's new

Two new levels! Also fixes an issue where the game wouldn't start in rare cases, please contact me at if this still happens to you.