ONELINE: One-Stroke Puzzle

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Relax, focus, and fill every cell — in ONE stroke. ONELINE is a minimalist one-stroke puzzle. Each level is a little shape made of glowing cells. Place your finger on a start cell and slide through the neighbours, filling every cell exactly once, without lifting — one continuous line. The cells light up in a satisfying rainbow as you go, and a burst of confetti celebrates every solve. Simple to learn, hard to put down. ★ FEATURES • 100 hand-crafted puzzles, from gentle 12-cell shapes to tricky 30-cell mazes • Cells as squares, circles or stars — the look changes as you progress • Rainbow fills, glow, haptics and confetti for a juicy, satisfying feel • Time Challenge — beat the clock and chase your best score • Daily Puzzle — a fresh challenge every day, with a streak to keep alive • Soft piano soundtrack to keep you calm and focused • 100% offline — no account, no sign-up, play anywhere • 6 languages: English, Français, Português, Español, Deutsch, العربية ★ WHY YOU'LL LOVE IT • A true brain-teaser that's also deeply relaxing • Pick up for 30 seconds or lose an hour — your choice • Clean, dark, modern design that's easy on the eyes • Smooth one-finger controls No internet required. No account. Just you, your finger, and one perfect line. Fill it in one stroke. Can you complete all 100?Read more

Relax, focus, and fill every cell — in ONE stroke. ONELINE is a minimalist one-stroke puzzle. Each level is a little shape made of glowing cells. Place your finger on a start cell and slide through the neighbours, filling every cell exactly once, without lifting — one continuous line. The cells light up in a satisfying rainbow as you go, and a burst of confetti celebrates every solve. Simple to learn, hard to put down. ★ FEATURES • 100 hand-crafted puzzles, from gentle 12-cell shapes to tricky 30-cell mazes • Cells as squares, circles or stars — the look changes as you progress • Rainbow fills, glow, haptics and confetti for a juicy, satisfying feel • Time Challenge — beat the clock and chase your best score • Daily Puzzle — a fresh challenge every day, with a streak to keep alive • Soft piano soundtrack to keep you calm and focused • 100% offline — no account, no sign-up, play anywhere • 6 languages: English, Français, Português, Español, Deutsch, العربية ★ WHY YOU'LL LOVE IT • A true brain-teaser that's also deeply relaxing • Pick up for 30 seconds or lose an hour — your choice • Clean, dark, modern design that's easy on the eyes • Smooth one-finger controls No internet required. No account. Just you, your finger, and one perfect line. Fill it in one stroke. Can you complete all 100?