CircloO - Play Online for Free! | Poki Game

CircloO drops you onto the inside of a circle and asks you to roll a ball around it using nothing but momentum. There's no jump button — you build speed by rocking back and forth, then let that speed carry you up and over the round obstacles blocking your path. It reads simple in the first few seconds and gets genuinely tricky once the circle starts growing.

Each of the 20 levels expands outward in stages: clear one section and the circle grows to reveal more track, more obstacles, and tighter timing. The game keeps your best completion time for every level, so once you've cleared one, there's a real reason to go back and shave seconds off your run.

Controls

A/D or the left/right arrow keys roll the ball; there's no separate jump input, all of your air comes from momentum built by rocking back and forth.

Tips

• Build a rhythm before you try to clear an obstacle — a few full swings back and forth generate more height than one panicked push.
• Watch the shape of the circle ahead, not just the obstacle right in front of you; upcoming curves change how much speed you'll carry into the next hop.
• The 6 levels flagged as difficult are worth attempting after you've cleared a few easier ones — the momentum techniques you build up early carry over directly.

It suits short, replay-focused sessions more than a single long sitting — one level, one best time, try again. It runs straight in the browser, nothing to install.