One Line
Mimi's color-grid workshop
One Line
Plan one continuous route and fill every open cell without visiting any cell twice.
One Line
One Line
Plan one continuous route and fill every open cell without visiting any cell twice.
One Line is an original 30-stage grid puzzle starring Rainbow Hop Mimi. Begin on the glowing paw, move through edge-sharing open cells, and color the entire board with one continuous route without visiting any cell twice.
Mimi is restoring color to dormant puzzle boards in a magical forest workshop. Stone cells block parts of each board, so the route must pass through every open cell exactly once.
The final five mastery grids combine longer routes, narrow exits, and deceptive early choices. Stage 30 completes the campaign and remains replayable.
A valid attempt begins on the glowing paw cell. Each move enters one open cell directly above, below, left, or right; diagonal jumps and repeated cells are not allowed.
The board is complete only when every open cell is colored. Releasing early, revisiting a cell, or reaching a dead end resets the attempt without spending currency.
Show Hint highlights the next cell in one possible solution, while Restart clears the current route. Using a hint reduces the best star result for that attempt.
Clears, unlocked stages, best star ratings, and best times are stored locally in this browser. Completed stages remain available from the horizontal Stage rail.
Stages 1-5 teach orthogonal movement and the no-repeat rule; 6-10 introduce corner planning; 11-15 use stone blocks to divide the board.
Stages 16-20 extend the routes, 21-25 introduce tighter choices, and 26-30 combine large grids, blocked cells, and narrow exits.
One Line is a route-planning puzzle rather than a freehand accuracy test. Large cells and interpolated pointer sampling make the same rules practical with a mouse or a finger, while the no-repeat and fill-every-cell conditions keep success focused on reasoning. A responsive logical Canvas fills the safe Stage and Battle rectangle while preserving one uniform scale, stable anchors, and the separate 56px General reserve.
One Line is recommended for ages 9+ and family play. It requires no account and stores progress only in the current browser. Stars and the Result skill summary are playful feedback, not a formal ability, medical, or school assessment.
Skill Report