Sokoban is the classic warehouse box-pushing puzzle game, and you can play it free online right here — 30 hand-crafted levels, no download needed. You are the warehouse keeper: walk around the board and push the crates onto the marked goal dots. The catch is that you can only push, never pull, and only one box at a time, so a single careless shove can wedge a crate into a corner where it can never move again. That is the whole art of Sokoban: think two or three pushes ahead, keep boxes away from walls unless a goal sits there, and work out the order in which the crates have to travel. The early levels teach the basic moves in small six-by-six rooms, and by the final warehouses you will be threading boxes through corridors and filling goal rows in exactly the right sequence. Every level in this set has been verified solvable, so if you are stuck, the fault is fixable — hit undo to take back any number of moves, or restart the level for a clean slate. Play with the arrow keys or WASD on desktop, or swipe in any direction on your phone or tablet. Your completed levels are saved in your browser, and a move counter tracks how efficient your solutions are. Can you clear all 30 warehouse puzzles?