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• New: hyperbolic boards — fill, slide, merge, and more on curved tilings • Hint and Solve now work on the N-Puzzles, shortest on small boards • Play every placement game from the keyboard; rotate pieces mid-drag • Home shelves games by geometry: hyperbolic, triangle, honeycomb, square • Fixes: Back closes dialogs first; the app no longer vanishes on relaunch
Packing Puzzles — fit, slide, and drop shapes to fill the board
The game runs locally in off-line mode. The main features are free and ad-free. Watch ads only to replenish free trials for advanced tools (e.g., undo&save, hint&solve). Packing Puzzles gathers a shelf of classic block, tile, and packing games around one simple idea: fit shapes together to fill a board with no gaps and no overlaps. Its centerpiece is Huarong Dao (华容道), the famous Chinese sliding-block escape puzzle known around the world as Klotski. You slide the ten blocks aside until the big one — the trapped general Cao Cao — can slip out through the gate. All 32 traditional openings are here, from 28 to 138 steps, each with its story and its minimum step count, including the celebrated 横刀立马 that solves in exactly 81 moves. Around it sits a full board of favorites. The N-Puzzles scramble numbered tiles to slide back into order — the classic 15 Puzzle and its bigger cousins. Polyominoes packs pentominoes and other shapes until the board is solid. Mosaic reassembles a cut-up picture or matches colored edges. Gridlock is a traffic-jam puzzle where you unblock the red car and drive it out, and Slide In has you stage each piece in a loading zone and slide it into place. For endless play there is Falling Blocks, Number Merge with Fibonacci and Trio modes — 1 and 2 make 3, then the tiles double — and Place & Clear, which clears full rows, columns, and boxes. The shelf does not stop at squares. A triangle world plays on the triangular lattice, where the pieces are triangles and the boards are hexagons and six-pointed stars: blocks tumble over their edges in Slide Out, MacMahon Triangles matches colored edges across a classic set of four-colored tiles, and Polyiamonds pack triangular pieces with no gaps. A honeycomb world plays on six-sided cells: merge tiles that can push six ways, pack polyhexes, and drop pieces down a hexagon well. The N-Puzzles scramble onto these boards too, and picture mosaics rebuild famous paintings tile by tiny tile. And then the boards leave flat paper entirely. The newest puzzles play in hyperbolic space, a world with more room than the flat page. Five squares meet at a corner instead of four, and so do four pentagons, three heptagons, or seven triangles. The board is drawn as the famous Poincaré disk: every tile is the same size on the board itself, even though no flat picture can show it that way — the same trick a world map plays with the round globe. Twenty-three of these boards are in the app, marked new. You pack pieces until the curve is covered, slide a block toward a goal where straight ahead bends away, match colored edges with no compass to lean on, merge numbers that push five ways, and solve sliding-tile puzzles whose tiles turn as they travel. You play by dragging pieces straight onto the board — rotating and flipping them to fit, even mid-drag — or tapping a tile to slide it, and every placement game plays from the keyboard alone too. Every game runs on the same careful engine, so each move is checked and a finished board is always correct. The sliding puzzles count your steps and remember your personal best. A built-in solver can hint the next move and play the whole solve out; on Huarong Dao, Klotski, Gridlock, and the smaller N-Puzzles, that hint is a shortest solution. Boards range from gentle starters to real challenges, with several sizes for each game, shelved on the home page by geometry. The app marks what you have solved, and lets you resume a half-finished board or save it for later. Every game carries a short guide — where it comes from, how to play it, and a taste of the math behind it. You can change the look, too: besides light and dark themes, the settings gear offers three wood finishes — Golden Oak, Mahogany, and Walnut — that carry through the whole app. It is a relaxed, hands-on way to enjoy spatial puzzles, sharpen your planning, and explore the simple math of how shapes fit together. It works in the browser, on the desktop, and on mobile, and it is free to play.