PuzzleHex

A jigsaw puzzle with no curves in it.

Every piece in PuzzleHex is a hexagon, and every cut between two pieces is made of straight lines at 30, 60 and 90 degrees. There are thirteen cut shapes: the classic three -- a shallow wedge, a steep dart and a square key -- and ten angular locks: dovetail, tee, arrow, hex, diamond, twin, step, crown, dome and cross. You are not hunting for colours -- you are reading angles and outlines. Find the tooth that fits the notch and the piece drops into place.

ORIGINAL ART. Thirteen pictures, all original Haunted Space Hotel art by Drew, the studio's artist.

FROM A DOZEN PIECES TO 2,000. Start with a dozen big pieces for small hands, or settle in for an evening with a puzzle of up to 2,000. On the big tables, pinch or scroll to zoom and drag to look around.

PICK UP A HANDFUL. Drag a piece, or hold it still for a moment to lift it -- hold a few more to gather a handful -- then tap where they go. Double-tap a heap, or a patch of bare table, and the pieces lying there spread out round your finger. The table is wide, with room to spread out.

PLAY TOGETHER. One device hosts and shows a four-letter code; friends type it and their hands are on the same puzzle at once -- in the next room on the same Wi-Fi, or across town over the internet. Everyone carries pieces at the same time, and you can see where everyone's finger is.

SORT ON MATS. Put down a few colourful placemats beside the puzzle and sort as you go -- all the sky on one, every face on another. Move a mat and its pile comes with it; spread it out with one tap.

YOUR PUZZLE, YOUR WAY. Mix all thirteen cuts, keep to the classic three, or play plain hexagons. Turn on rotation and the loose pieces arrive turned; turn on mirror and the picture is flipped left to right. A faint picture guide, edges first, a timer and best times are all there when you want them and gone when you don't. The menu is pictures, not words.

- Your first puzzle shows you every move, one at a time
- Stop any time: your puzzle is exactly where you left it
- Portrait or landscape, phone or tablet -- turn the device mid-puzzle and the table turns with it
- Touch or mouse
- No ads. No accounts. No names, no chat. Play alone with no internet at all.

Four pictures are free in the four smaller sizes, from about a dozen pieces to about a hundred. One purchase opens every picture, the five big sizes -- from about 160 pieces up to 2,000 -- and hosting a table for friends, once, for good, on every device signed in to the same account. Joining a friend's table is always free.

From Haunted Space Hotel Studios.