Circles & Lines is a circular puzzle game for Android. Arc-shaped pieces drift in from the edge toward the moon at the center. You don't move the pieces — you spin the whole board with a swipe to catch them, and tap to drop. Complete a ring all the way around and it clears; the pieces left outside collapse inward, which can set off chains. Free, one-handed, 2–3 minute sessions, works offline. Small banner during play, full-screen ad at game over, no IAP.
Hi Product Hunt! I'm a solo developer from Japan. Circles & Lines started from a simple question: what if the board was round, and you spun the board instead of moving the piece? The answer turned out to be a puzzle that plays quite differently from a flat grid — the column under the piece keeps changing as you spin, so planning ahead feels new. It's free on Google Play, works offline, and a round takes 2–3 minutes. One ad after game over, nothing during play, no in-app purchases. I'd love feedback on the difficulty curve and how the rotation feels.