Tamagotchi: Happiest Story in the Universe! (2008)
Original title: 映画！たまごっち うちゅーいちハッピーな物語!?
Tamagotchi: Happiest Story in the Universe! is a 2008 Japanese-language animation movie directed by Joji Shimura, with a running time of 1h 30m. It stars Yuko Gibu, Ryoka Yuzuki and Asami Yaguchi.
Mametchi and his friends must save Tamagotchi world from a book that is beginning to destroy reality, entitled "The World's Happiest Story".