Isometry

A flat cardboard net lies on the table. Fold its flaps up one at a time, each to its mark, until it stands as a box. Isometry is a quiet puzzle game drawn in fine isometric lines. Every level is a real net, and every fold has an angle to find: a wall stands at 90°, a house roof leans at 51°, the faces of a dodecahedron meet at 117°. FORTY NETS IN FIVE CHAPTERS • First Folds: trays, cubes, sleeves and lids • Angles: a wedge, a pyramid, a tent, a barn with a gambrel roof • Order: tuck boxes and pizza boxes, where one flap has to go before another • Pairs: a drawer that slides into its sleeve, a lid that turns over and drops on, a box packed inside a box • Solids: a tetrahedron, an octahedron, a lantern, a dodecahedron, and the Grand Box FOLD IT YOUR WAY • On iPhone and iPad, tap a flap and turn its dial, or drag anywhere to lift it. Let go on the mark and it creases. • On iPhone Duo, tap a fold and the flap takes the phone's own angle. Fold the phone to fold the flap, and close it to shut the lid. STORY PACKS Once the first level is done, the story packs open: objects in several pieces, each folded on its own and then put together, with a line of story to every level. • Paris: a café kiosk, a bookstall by the river, a box of macarons, the Arc de Triomphe and the tower • World Landmarks: the pyramids of Giza, a clock tower, a lighthouse, a pagoda and a windmill • And in their seasons, each for its own weeks of the year: Halloween, Christmas, Ramadan and the Lunar New Year THREE MARKS Finish a level without a slip for three marks. A wasted fold, a bump or an undo costs one. Levels open in order as you finish them, and every box you finish stands on the home page's shelves. Your marks follow you to your other devices through iCloud. GAME CENTER Sixteen achievements: the first fold, each chapter, full marks, all 120 marks, a clean run of five, a level folded by the hinge, and each pack. DRAWN IN HAIRLINE Fine grey lines on white with one orange flap in hand, or, in dark mode, Hairline Night: light lines on black with amber. No ads, no accounts, no in-app purchases. Plays fully offline.