Pocket Games
One Path
A grid with a few switched-off cells, a starting dot, and one rule only: fill everything with a single continuous line, without lifting your pen and without going over the same spot twice. Every puzzle has one and only one solution.
How to play
Start from the colored dot and drag your finger: the line stretches to the neighboring cells, one at a time, horizontally or vertically. The goal is to pass through every lit cell exactly once until the grid is full. You can’t move onto switched-off cells, you can’t cut across diagonally, and you can’t go back over a stretch you’ve already drawn.
The level is done when the line covers every cell: at that point you lift your finger and, if the path is complete, you’ve solved it. As long as you don’t let go, you can still make adjustments.
Backtracking and changing route
If you realize you’ve made a mistake, there’s no need to start over: tap a point that’s already on the line and the tail from there onward disappears, so you set off again from that spot in a new direction. It’s the fastest way to fix a dead end without throwing away the whole line.
A single solution
Every grid is built to have one single way of being filled: the switched-off cells aren’t decoration, they’re the walls that force the line to turn where it needs to. That’s why there are no ambiguous or impossible puzzles: if you’re stuck, there’s always a stretch to redo, not a missing solution.
How to think it through
Start from the corners and the corridors. A cell with a single way out has to be an endpoint of the path, or it can only be crossed one way: those are the spots to lock down first.
Follow the constraints, not your gut. Where the grid narrows into a one-cell corridor the line has no choice: it’s best to draw those forced stretches first and connect the rest afterward.
The switched-off cells are clues. A hole in the middle of the grid tells you the line has to go around it, and it often reveals which way it’s forced to turn.
Difficulty ramping up
You progress through levels. At the start the grids are small and the paths short; as you go on they grow, more switched-off cells appear along with more isolated holes in the middle, and finding the one path takes a few more steps. The level you reach is saved and, with a Google account, follows you onto your other device.
Frequently asked questions
Can cells be crossed diagonally?
No: the line moves only horizontally and vertically, one cell at a time. Diagonals don’t count as a connection.
Do I have to finish on a specific cell?
No: only the starting point matters. Where the line ends is up to you, as long as every lit cell has been touched once.
Can I get stuck with no solution?
No: every puzzle is verified and has a unique solution. If you can’t close it out, there’s a stretch to redo, tap a point on the line and set off again from there.
Can I play on a computer too?
Yes: in the browser on desktop you can also use the arrow keys to extend the line and Backspace to backtrack, as well as the mouse.
Can you lose the game?
No, there’s no timer and no limit on mistakes: it’s a pure logic puzzle. The level you’ve reached stays saved.
More games to try
See the full list of games, or open Pocket Games in your browser: they are free and you don’t need an account.