Bookworm is a game whose object is to string together the letters in each box to form words as long as possible. At our disposal we have two different game modes. Classic, in which you go up a level each time you get points, and time in which you are put under more and more pressure. The game controls are super simple, dragging your finger from one square to another to a chain of letters, and shaking the iPhone to remove all the boxes again. In addition, this version of the game iOS comes with a series of internal achievements, which will encourage us to get certain words such as colors, insects or pets. Bookworm is an excellent title that, despite its high price (to be a set of iOS), will keep you occupied for hours.