word search is a word game that consists of the letters of words placed in a grid, which usually has a rectangular or square shape. The goal of this puzzle is to locate and label every word concealed inside the box. Words may be arranged vertically, horizontally, or diagonally. More difficult puzzles might not always include a list of the hidden words, however this is not always the case. Many word search puzzles contain a theme, such as food, animals, or colors, to which all the hidden words are connected. Similar to crosswords and arrowords, puzzles have gained a lot of popularity. These latter puzzles share another trait with them: they have been the subject of entire books and mobile applications.