Nonogram, also known as Picross or Griddlers, is a picture logic puzzle where you fill in cells on a grid to reveal a hidden pixel image. Number clues along each row and column tell you exactly how many consecutive filled cells appear and in what groupings. By cross-referencing row and column clues, you can deduce which cells must be filled and which must remain empty. Larger grids produce more detailed images but require more complex reasoning. The game includes multiple grid sizes and difficulty levels, from simple 5x5 puzzles that take seconds to challenging 15x15 grids that demand careful analysis. Nonograms are beloved worldwide for their meditative quality and the satisfying reveal when the final image emerges from pure logic.