Nonogram

Nonogram is a free online picture-logic puzzle, also known as a Griddler or Picross. Use the number clues along each row and column to work out which cells to fill, and a hidden picture slowly appears. Play free with no download and no sign-up, on phone or desktop.

How to play

• The numbers beside each row and column list the lengths of the runs of filled cells, in order.
• A gap of at least one empty cell separates neighbouring runs.
• Tap a cell to fill it; switch to Mark mode to place an X on cells you know are empty.
• A clue turns muted once that row or column matches its numbers.
• Pick a board size (small, medium or large) to set the challenge.
• Fill every correct cell to reveal the picture and solve the puzzle.

Start with the longest clues on the smallest lines — a run that nearly fills a row leaves only a few positions, so its overlapping cells are certain. Mark empty cells with an X as aggressively as you fill: knowing where a run cannot go is just as powerful as knowing where it must. Work rows and columns in turns, letting each solved line unlock the crossing ones.

Like Nonograms? There are whole Picross and nonogram puzzle books to work through offline. As an Amazon Associate, izn.games earns from qualifying purchases.