Nono Zen: Nonogram Puzzle

The logic puzzle, the way the magazines meant it.

Every grid in Nono Zen is certified line-solvable: one solution, reachable by pure logic, with no guessing ever required. A solver proves it before the puzzle is allowed into the app — and any grid that would need a coin-flip is thrown away rather than shipped with a hint.

There are no lives here. No hearts, no energy, no meter counting your mistakes. Erase, undo and rethink as much as thinking takes.

WHAT YOU GET
• 26 original pixel-art pictures across six themed packs
• Grids from a 5×5 warm-up to a 20×20 evening
• Four honest grades — Gentle, Steady, Deep and Master — named for the technique each puzzle actually needs
• Assist mode flags slips as you make them; Classic mode flags nothing until you ask. Switch mid-puzzle, any time
• Unlimited undo, erase and restart, with no ad attached to any of them

BUILT FOR REAL THUMBS
Drag-paint with a direction lock, so a slip out of the line simply does nothing. Pinch to zoom, pan with the clue rails in place, or switch to the precision cursor when the cells get small. Auto-cross finishes off a satisfied line for you.

SOLVE IT, KEEP IT
Finishing should build something. Every completed picture blooms out of the grid in full colour and joins your Gallery — titled, dated, and yours, with a colour/ink toggle on each piece and a plaque when a pack is complete.

THE DAILY GRID
One puzzle per date, the same one for everyone, everywhere. Your trophy calendar stamps the days you finish and leaves the days you missed blank — there is no streak here to break.

THE ZEN ROOM
Endless certified abstracts at whatever grade you're in the mood for. No picture at the end, just the logic, for as long as you want it.

Works fully offline. Paper and Night Desk themes. No coins, no energy, no shop.