Monoline: One Line Puzzle

Monoline is a beautifully minimal one-line puzzle. The rule is simple: connect every dot in a single, unbroken stroke — never lift your finger, and never retrace a line. Simple to learn, wonderfully hard to master. Glide your finger across glowing dots and watch each line light up. Every puzzle is hand-verified to be solvable in one perfect stroke — so if you're stuck, there's always a way through. FEATURES • 500 handcrafted levels — from a gentle 2-line warm-up to intricate 80+ line webs • A difficulty curve that grows with you, one dot at a time • Daily Challenge — a fresh puzzle every day, with a streak to keep alive • Smart hints when you need a nudge • Satisfying sound and haptics on every connection • A calm, glowing aurora design that's easy on the eyes • Play offline, anywhere — no internet required • Free to play WHY YOU'LL LOVE IT Monoline is the perfect pocket puzzle for a quiet moment. It's relaxing enough to unwind with, and clever enough to keep your brain sharp. Whether you have thirty seconds or thirty minutes, there's always one more line to draw. Connect the dots. Never lift your finger. One stroke to solve it all.