1Line: One Line Brain Puzzle

Connect every dot once and finish with one continuous line. 1Line is a one-stroke puzzle game. Start at the glowing dot, visit every dot once, and reach the goal. Simple rules leave plenty of room to plan a better route. Features • Journey stages with stars to earn • Automatic journey progress saving and resume • Fresh classic puzzles with more varied shapes • The same daily puzzle for players around the world • Chapter progress and collection goals • Hints that preserve a solvable route, undo and path reset • Live star ratings and a new challenge to improve your record • Refined UI, animations, sound effects and haptic feedback • IP-based country suggestion with manual country selection • Today, weekly, all-time and country leaderboards • Best scores stored on your device • Korean and English support No sign-up is required. The game is free to play and has no paid purchases. Optional rewarded ads After free hints are used, you may choose to complete a rewarded ad for 3 hints. Ads use only ironSource Ads and Unity Ads through Unity LevelPlay, with child-directed settings, no advertising ID, no personalized ads and a sale/sharing opt-out for every player. No tracking permission is requested. Gameplay and free hints remain available if you decline ads or ads are unavailable. The ad SDK does not start in the EEA, UK, Switzerland or when the country cannot be verified. You can change your ad choice in Settings. Privacy and support: https://1line.co.kr/#privacy / admin@kcrew.co.kr