Mazes and Monsters (1982)

Mazes and Monsters
Fantasy, Drama, TV Movie
Bound together by a desire to play "Mazes and Monsters," Robbie and his four college classmates decide to move the board game into the local cavern. Robbie loses his mind, and the line between reality and fantasy fuse into a harrowing nightmare.
Starring
Tom Hanks, Wendy Crewson, David Wallace, Chris Makepeace, Lloyd Bochner, Peter Donat, Anne Francis, Murray Hamilton, Vera Miles, Louise Sorel
Directed By
Steven Hilliard Stern