Tessera: Sudoku & Nonogram

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About this game

Three classic logic puzzles in one app: Sudoku, Killer Sudoku and Nonogram.

Tessera is built around one idea — the difficulty label should be honest.

Every puzzle has exactly one solution, and that is proved rather than assumed. A tier is named
after the hardest technique a puzzle actually needs, not by how long a solver took to give up. If
a board is labelled Expert, it is because it genuinely requires swordfish or quads; if it is Easy,
singles will finish it. The app knows twenty-two techniques by name and will tell you which one a
hint just used.

PUZZLES
• Sudoku 9×9 — five tiers, from singles to chains
• Killer Sudoku 9×9 — cages and sums, no given digits, as the genre intends
• Nonogram — 5×5 to 20×20 picture logic, no guessing ever required

WHILE YOU PLAY
• Pencil marks, unlimited undo, and an erase that only clears what you put there
• Three levels of hint: where to look, which technique applies, and only then the answer
• Optional mistake limit, with a second chance if you want one
• Drag to paint whole runs on a nonogram, with completed lines crossed off for you

EVERY DAY
• A Daily Challenge of three puzzles, one of each type
• A calendar you can play back through, and one trophy per perfect month

LEARNING
• Three tutorials that are real boards with the keypad live — nothing is a video, you play
every step

OFFLINE, AND MEANT IT
Puzzles are generated on your phone. Times, streaks and awards are stored on your phone. There is
no account, no sign-in, no sync and no analytics. Tessera makes no network request of its own; the
only traffic is the ad SDK, and removing ads removes that too.

Ads appear on the menu, on the reading screens, beside a board while you play, when a puzzle ends
and when the app opens. Nothing ever takes over the screen mid-puzzle.

What’s new

First release.

Sudoku, Killer Sudoku and Nonogram in one app, five difficulty tiers each.

Every board is generated on your phone and has exactly one solution, so no puzzle ever needs a guess. Difficulty is named after the hardest technique a board actually needs — Expert stays Expert.

• Daily Challenge: three puzzles a day, monthly awards
• Hints that name the technique, not just the answer
• Pencil marks, unlimited undo, optional mistake limit
• Fully offline. No account, no sign-in.