Hanjie, aka Nonograms, Paint by Numbers, or Griddlers are picture puzzles in which cells in a grid are coloured according to numbers given at the side of each column and row of the grid to reveal a hidden picture.
NonoGrid is a puzzle game that lets you play and solve nonograms/griddlers
New version of extra cool Japanese logic puzzles - griddlers (nonograms).
Beautiful logical game. Discover the picture, coded by numbers.