Square's Tom Sawyer (スクウェアのトム・ソーヤ, Sukuwea no Tomu Sōya) is a role-playing video game produced by Square that was released exclusively in Japan in 1989 for the Family Computer (the Japanese version of the Nintendo Entertainment System). The game is directly based on Mark Twain's renowned 1876 novel, The Adventures of Tom Sawyer, and was developed in the role-playing video game niche that made Square famous with its acclaimed Final Fantasy series of video games.