One Line Shift

205 hand-checked puzzles. No timers, no lives, no ads. The first 55 are free; one purchase unlocks the rest and everything added later.

Hold a dot. Drag along the lines. Cover every path exactly once.

That is the whole rule — and it is enough to leave you stuck for ten minutes, then see it all at once.

It is a hard game — not because it rushes you, but because you have to see something.

No lives, no countdown, no way to fail a level. Only "not yet". Lift your finger any time; the board waits exactly where you left it.

Every rule is drawn on the board. There is no text on it, anywhere.

The clock starts at your first touch, not when the level opens. Thinking is free.

205 puzzles: 5 to learn the idea, 150 to build on it, 50 with portals — where the hard part is working out where to start.

The first 55 are free. One purchase unlocks the rest, and every level added later. No subscription, no ads.

No account. No network. No data collected. It works in airplane mode; progress syncs through your own iCloud.