In the scene in which Harold's team interrogates Scott in the van, Andy Tennant, who played "Melio," was sick with the flu and had a fever of over 103 degrees F.
The movie inspired Joe Belfiore, a high school junior in Clearwater, Florida, to create a similar game. He took the game with him to Stanford University, then ultimately to Microsoft. The Game, as it came to be called, in turn, inspired the movie The Game (1997).
David Naughton drinks from a very conspicuously placed Dr Pepper bottle. He starred in the "I'm a Pepper, You're a Pepper" commercials.
Disney released this film, its second to be rated "PG" by the MPAA (the first being The Black Hole (1979)), without any mention of its involvement, in hopes that teenage audiences might be more likely to see it if they didn't know that it was a Disney picture. (However, the cover art of the DVD release of the film in 2004 credits the film to Walt Disney Pictures.)
Originally titled "The All Night Treasure Hunt", the title was changed to avoid confusion with Scavenger Hunt (1979)