Trivia: A rather odd piece of trivia. The entire plot of the movie was original, and follows none of the video-games in the series. The actual games take place in the "Mushroom Kingdom", a fantasy world filled with fantasy characters. But for some reason, the movie takes place in our world, with alternate universes and sci-fi creatures. Many fans of the games were dissapointed that the filmmakers did no justice at all to the games.
Trivia: Years after the film came out, co-star Dennis Hopper's son asked his dad why he was in the film, given its notoriously poor reception from critics and fans. Hopper, a working actor, responded with "So we could have money to buy you shoes." His son then quipped back "Dad, I don't need shoes that badly."