ISBN-13: 9789657679319 / Angielski / Miękka / 2014 / 42 str.
Triddlers puzzles, variant of iGridd, also known as Griddlers or Nonograms, are picture logic puzzles in which cells in a grid have to be colored or left blank according to numbers given at the side of the grid to reveal a hidden picture. Some people compare Griddlers to Sudoku. However, the iGridd puzzles always reveal a nice image as a result.