OneTrail - Line Maze Puzzle

One trail. Every cell. No shortcuts. OneTrail is a quiet, focused puzzle about drawing a single unbroken line through every cell on the board. Start at the flag, end at the trophy, and pass through every numbered checkpoint in order along the way — but skip even one cell, and the trail isn't complete. HOW TO PLAY • Drag from cell to cell — you can only step to a cell next to your current one. • Visit every single cell exactly once. • Hit the numbered checkpoints in the right order. • Made a wrong move? Tap any earlier point on your trail to instantly rewind — no penalty, no restart required. 100 LEVELS, A REAL CURVE The first few levels ease you in on a small, open board. From there, grids grow larger and maze walls start appearing between cells, closing off shortcuts and forcing you to actually think several moves ahead. By the final levels you're tracing a full trail across a large, wall-filled maze with only a handful of checkpoints to guide you. DESIGNED TO STAY OUT OF YOUR WAY • No ads. • No accounts or sign-in. • No trackers, analytics, or data collection of any kind. • Nothing to buy. Just the puzzle. OneTrail is built for the moments you want your mind on one clean, solvable thing. Pick it up, trace the trail, put it down.