7ThirtyWorld Puzzle Studio — 9 Offline Puzzle Games in One App

Nine classic puzzle games. One file. No ads, no subscription, no internet required — ever.

7ThirtyWorld Puzzle Studio is a complete puzzle magazine that lives in a single file on your computer. Download it once, double-click, and it opens in your browser. No installation, no account, no sign-up — and it keeps working with the Wi-Fi off, on a plane, in a waiting room, forever.

No ad will ever interrupt a puzzle, because there are none. You buy it once and it is yours.

Nine games, one library

• Crossword — 13×13 symmetric grids, on-screen keyboard, clues that strike themselves out as you solve.
• Word Search — drag to select; each word is crossed out in its own translucent colour so overlaps stay readable.
• Sudoku — pencil-mark notes, live duplicate marking, tiers graded by the technique a solver actually needs.
• Codeword — a filled grid where every letter is a number. All 26 in play, no clues at all.
• Cryptogram — a traditional saying behind a substitution cipher, with a letter-frequency table to work from.
• Emoji Mahjong — mahjong solitaire with emoji faces, across 21 board shapes drawn for this store.
• Solitaire — Klondike with custom cards, draw one or draw three.
• Mazes — square, hexagonal, circular, braided and weaving, traced with your finger.
• Jigsaw — real jigsaws from 100 to 1000 pieces, stamped with one of eight cutting dies. Pieces start turned every which way; click to turn them, drag to move them. Build sections out on the table and drop the finished run into the board in one go.

Nothing here is impossible

This is the part most puzzle apps quietly skip.

• Every sudoku has a proven unique solution, confirmed by exhaustive search.
• Every mahjong board is built backwards from a legal solution — unlike most mahjong apps, where roughly one board in five cannot be cleared at all.
• Every solitaire deal was played to completion by a solver before it shipped. About one random Klondike deal in five is unwinnable; none of those are here.
• Every maze was re-solved after compression, then decoded and solved again inside the app itself.
• Every jigsaw piece is cut to its own shape — no two in a puzzle are alike, even at 1000 pieces — and every seam was measured to confirm the pieces genuinely interlock rather than merely sit beside one another.

Built the way players actually ask for

• Unlimited undo in Sudoku, Solitaire, Mahjong, Codeword and Cryptogram.
• The timer can be switched off if a running clock spoils the relaxation.
• Daily Challenge — one puzzle a day from the packs you own, feeding a streak counter.
• How to play tab on every game, with real tactics rather than filler.
• Share your result when you finish, with a link back to the pack you were playing.
• Sound effects and win celebrations, both switchable.
• 7ThirtyWorld AI Radio built in — press play and listen while you solve. It is the one thing in here that uses the internet: entirely optional, off until you ask for it, and every puzzle still works with no connection at all.
• The whole pack range, inside the app — browse every expansion pack from the home screen and see at a glance which ones you already own.
• 194 achievements, including a dedicated set for every single game.
• Free sample puzzles for all nine games, built in permanently.
• Dark and light themes, ivory or slate mahjong tiles, large print, and a relaxed mode with no scoring.
• Progress saves itself. Close it mid-puzzle and come back exactly where you left off — including a half-built thousand-piece jigsaw.

Expandable — and every game keeps its own puzzles

Puzzle Studio reads 7ThirtyWorld puzzle packs: themed collections that drop onto the app and join your library permanently, offline. Puzzle packs are $6.99 for 100 puzzles; jigsaw packs are $3.99 for around 30 images.

Each game has its own puzzle data, so playing one can't spoil another. 57 packs are available now — 4,700 puzzles plus 298 jigsaw images, across all nine games. See the full pack range →

Requirements

Any modern browser (Chrome, Edge, Firefox, Safari) on Windows, Mac, Linux, Chromebook, tablet or phone. Nothing to install. No connection needed after download.

Instant digital download. One file. Yours forever.