The Smodcastle 37 Hour Film Challenge is an annual filmmaking competition hosted by Smodcastle Cinemas, co-founded by filmmaker Kevin Smith. Participants are challenged to create a short film, typically no longer than 4 minutes and 30 seconds, within a strict 37-hour timeframe. Filmmakers receive specific prompts, including a required prop, character, and line of dialogue, which must be incorporated into their submissions. Top finalist films are screened at Smodcastle Cinemas, and winning entries may also be featured on Kevin Smith's YouTube channel and run in theaters.