24-hour comic

A 24-hour comic is a 24-page comic book written, drawn, and completed in 24 hours. Cartoonist Scott McCloud came up with the challenge in 1990 as a creative exercise for himself and fellow comics artist Stephen R. Bissette. Beginning in 2004, writer Nat Gertler helped popularize the form by organizing annual 24 Hour Comics Days (usually held in October), which now take place regularly in the United States and many other countries worldwide.