Unblock Me

Unblock Me is a sliding block puzzle played on a six-by-six board. Every piece moves only along its own axis — horizontal blocks slide left and right, vertical blocks slide up and down — and nothing ever rotates or jumps over anything else. Drag a block and it travels as far as the free space allows; one drag counts as a single move no matter how many squares it covers, so planning a long slide costs no more than a short one.

The red block sits in the exit row and escapes through the gap on the right edge, which makes the puzzle a question of clearing its lane while finding somewhere to park everything you displace. Undo steps back through your moves, Restart returns the board to its opening position, and Hint calculates a useful next move from wherever you currently are rather than replaying a fixed script. The campaign eases you in — the first five boards fall in a handful of moves and the next ten build up steadily — before settling into eighty-five expert jams that need thirty moves or more. Every board was machine-verified as solvable before release, and each level records your best move count and awards three stars only for the shortest possible solution.