circloO XL — Play Free Online

circloO XL is a momentum puzzle where the whole level is the inside of one giant circle. You are a small ball rolling along the curved floor, and gravity keeps you pressed to the ring. Your only input is left and right, so everything else comes from physics: roll down one side of the bowl and you swing up the other, gaining height and speed the way a pendulum does.

Scattered around the arena are little circles. Roll over one to collect it, and the arena expands a little further, opening up new ground and harder-to-reach spots. The goal on each stage is to sweep up every circle and fully open the ring. It sounds simple, but the last few pickups are always the awkward ones, perched on high ledges you can only reach with a clean, well-timed run.

It is the follow-up to circloO and circloO 2 from developer Florian van Strien. If you enjoy Doodle Jump, it scratches a related itch: reading a curve, timing a launch, and keeping a smooth rhythm. It just trades vertical climbing for rolling, circular physics.

How to play

Move the ball with the A and D keys, or the left and right arrow keys. On a phone or tablet, use the on-screen buttons. There is no jump button — height comes entirely from momentum, so you steer left and right to swing the ball and build speed.

A stage clears when you have collected every circle in the arena. Watch how each pickup expands the level, then use the bigger space and the speed you have already built to reach the next one.

Tips

• Treat the arena like a swing set: roll down one side and let the curve carry you up the other, instead of starting from a dead stop.
• Clear the low, easy circles first, then spend the speed you already have on the high ones.
• Use short taps rather than holding the key, so you keep control instead of overshooting a ledge.

Similar games on Doodle Jump

If you like the ball-and-momentum feel, Helix Jump drops a ball down a twisting tower of platforms. Ovo 2 is a tighter, faster precision platformer with the same timing focus, and Fireboy and Watergirl brings a two-character cooperative puzzle angle to the site.

circloO XL suits short, low-pressure sessions: pick it up for a few minutes, clear a stage or two, and come back later. It runs right in the browser with nothing to install, on desktop or mobile.