Neon On! vs OneLine

Wanna see something amazing? Like, really electrifying? The ultimate neon puzzle game is here! Get your neon cables out of knots and connect them to the right light sources to create amazing neon masterpieces! Love puzzles and hate knots? Well, this neon maze gets harder as you go, so think before you connect your neon light cables or you may end up with quite the puzzle full of neon knots. To opt out of CrazyLabs sales of personal information as a California resident, please visit the settings page within this app. For more information visit our privacy policy: https://crazylabs.com/app

Welcome to OneLine: Dot Connect — the elegant Euler path brain teaser that challenges your logic and spatial reasoning. 【How to Play】 Draw a single continuous line through every dot on the grid without lifting your finger or revisiting any dot. Simple to learn, deeply satisfying to master. 【Game Features】 ■ 50 Handcrafted Puzzles Four chapters of increasing difficulty, from simple 3×3 grids to complex 8×8 challenges. Each level is a unique brain teaser designed to make you think. ■ Two Play Modes • Quick Play — jump right in with a random puzzle • Level Select — choose your challenge and track progress ■ Star Rating System Earn up to 3 stars per level based on performance. Complete all 50 puzzles with perfect ratings to prove your mastery. ■ Smart Hint System Stuck? Use hints to guide your thinking without giving away the solution. Hints highlight the next logical step. ■ Full Undo Support Made a wrong turn? Undo any move at any time. Restart puzzles freely — no penalties, no pressure. ■ Intuitive Touch Controls Smooth touch-drag controls optimized for iPhone. Draw your line naturally with a single finger. 【About Euler Path】 The Euler path problem traces back to mathematician Leonhard Euler and the famous Seven Bridges of Königsberg. Your goal: find a path through every node exactly once. A classic problem that has fascinated minds for nearly 300 years. 【Privacy Commitment】 Fully offline. No personal data collected, no ads, no in-app purchases, no internet required. Download and play immediately — no account needed. Start your OneLine journey today!