Jumanji

Sister and brother Judy and Peter move to a new house with Aunt Nora. In the attic, they find an unusual board-game, Jumanji. When they play, a rhyming quiz appears, and they're sucked into the bizarre world of Jumanji, where they have to solve the riddle in order to win the game. They meet Alan, who has been trapped there for years, and the three of them get into action-packed scrapes as they try to help Alan escape, but are always thwarted at the last minute. (imdb)