Solve nonograms free online and improve your logic. This classic version of griddlers offers dozens of puzzles in twelve difficulty modes. Be attentive, as there is no undo option, and your mistakes can't be corrected. Use the toggle below the grid to switch between color and cross marks. Start with 5x5 griddlers to train your skills, and then proceed to large difficult nonograms.
Such classic pen and paper puzzles are among popular games for seniors, because brain-teasers improve quick thinking and ability to concentrate. That's why we recommend checking other board games and puzzles from our vast collection of free online games.