Bookworm is a fun word-form puzzle game by PopCap Games for PC and Apple iPhone. In a simple grid of yellow letters, players link words to form sentences. As words are made, they are removed form the grid and only the empty spaces remain. When all words have been completed, the player's picture is revealed and a hint is displayed on the screen telling them how many more words they need to complete the puzzle in order to win it.
It is a casual game that is not overly challenging, and therefore any age group, from elementary students to college students, can enjoy it. The concept is similar to that of other word-puzzle games such as Scrabble or crossword puzzles, where the objective is to eliminate all of the words while trying to get your word to appear at the correct position within the Scrabble board. However, with Bookworm, the objective is to fill all of the square spaces with words so that when the word is created, the square space is filled with a different word.
This is where the difference lies between a casual game and a puzzle game. With the original bookworm, filling the squares required to make words required more thought than just dropping a bunch of letters in a random manner onto a flat surface. In addition to this, the original bookworm also required the player to be strategic and deliberate in their moves. The player needed to think about how certain words would connect and link to others, and where they would be most effective placed on the puzzle board. By creating words with your pencil, and then placing them onto the board in strategic positions, you could increase your chances of making the best word combinations.