24-Hour Comics Day is an international annual challenge to produce a 24-page comic (normally a month’s amount of work) in 24 consecutive hours. Now an annual tradtion, this dare was invented by Scott McCloud in 1990. Participating artists include Dave Sim, Neil Gaiman and Kevin Eastman. Creators of all ages and levels of skill and experience sturggle to complete this creative marathon. Learn more about details and history, or how to participate.