The one-line path puzzle
Draw a single continuous line that connects the numbers 1, 2, 3 … in order and fills every cell on the board. Free, instant, unlimited — no login.
♾️ Unlimited puzzles
🔓 No login
★ Daily challenge + streaks
📱 Plays on any device
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What is Trail?
Trail is a browser-based path puzzle in the same family as the LinkedIn Zip game. You draw one unbroken line that visits the numbered checkpoints in order — 1, then 2, then 3 — while passing through every single cell exactly once. Pure logic, a single solution, no guessing.
Unlike puzzles capped at one per day, Trail is unlimited — tap "New puzzle" any time, or take the shared Daily Challenge and build a streak.
How to play
- Press on 1 and drag your finger or mouse to trace a line.
- Pass through the numbers in order (1 → 2 → 3 → …).
- Your line must cover every cell and never cross itself.
- Drag backwards to undo, or tap a cell on the line to rewind.
Frequently asked questions
- Is Trail free?
- Yes — free and unlimited, supported by ads.
- Do I need an account?
- No login. Your streak and best times are saved in your browser.
- Is every puzzle solvable?
- Yes — each board has exactly one valid path.