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One Line is an entertaining and clever puzzle game. Whether you’re at home, work, the park, or on the bus, this one-touch line-drawing game is perfect for on-the-go brain training. It’s lightweight, so it won’t take up much device space or drain your battery—and it’s free! Some puzzles are so tricky that only 1% of players can solve them. Are you up for the challenge?
Drag the mouse to connect all the dots at once
Slide the screen to connect all the dots at once
Identify outermost dots first as they often determine starting or ending points. These dots have fewer connection options and constrain the solution path.
Map the complete path before drawing. Visualizing the entire route prevents dead ends and wasted attempts.
Approach puzzles as brain training exercises. The logical thinking and spatial reasoning improvements are valuable beyond game completion.
Embrace the challenge of puzzles that only 1% of players can solve. These expert-level layouts offer genuine mental stimulation.
Use the lightweight design for on-the-go brain training. The battery-friendly, space-efficient design makes it perfect for mobile play anywhere.
Completely free, with no hidden costs—download and play all puzzles without paying, making it accessible for everyone, regardless of budget.
Hundreds of puzzles with varying difficulty, from simple dot patterns for beginners to complex layouts that test even seasoned players.
Lightweight design that works smoothly on both PC and mobile, with no lag, ensuring a seamless experience on any device.
Brain-training benefits, as each puzzle improves logical thinking and spatial reasoning skills while keeping you entertained.
Yes, One Line is 100% free. There are no in-app purchases, ads that block gameplay, or locked puzzles—you can enjoy the entire game without spending money.
Start by identifying the outermost dots—they often determine the starting or ending point of your line. Then, map a path that connects all dots without lifting your finger/mouse.
The game has over 300 puzzles, with new ones added monthly. They range from easy (5-10 dots) to expert (20+ dots), so there’s always a new challenge to tackle.
4.3/ 5
Average Rating · 5 reviews
PuzzleLogicFan
2025-01-20
The one-touch line-drawing mechanic is brilliantly simple yet deeply challenging! The outermost dot strategy genuinely helps with harder puzzles. Perfect brain training.
CasualBrainTrainer
2024-12-15
The lightweight design makes it perfect for on-the-go play! Hundreds of puzzles with varying difficulty keep me engaged. Some 20+ dot puzzles are genuinely mind-bending.
ChallengeSeeker
2025-02-01
Easy controls make drawing accessible, but mastering the complex layouts takes genuine spatial reasoning. The 1% challenge puzzles are incredibly satisfying to solve.
MobileLineDrawer
2024-11-28
Slide controls work smoothly on mobile for precise line drawing. The game is indeed lightweight and battery-friendly. I can train my brain anywhere!
DailyConnector
2025-01-10
The progressive difficulty from simple to expert is well-designed. Connecting all dots at once creates genuine satisfaction. The clever puzzle design keeps me coming back!
