Avatar: The Last Airbender comics are visual publications that depict events and situations unseen during the series' run. Most of the first comics released occur during and between episodes as a means of supplementing the series, while comics released following the conclusion of the show's official run pertain to events after the end of the Hundred Year War. They are official comics released by various sources, including Nickelodeon Magazine and Nickelodeon Comics Club; the official Avatar: The Last Airbender DVD volumes; and numerous publications by Dark Horse Comics, including minicomics released as part of Free Comic Book Day. The comics were archived at a sub-site of Nickelodeon, but taken down and rendered inaccessible upon the cancellation of Nickelodeon Magazine in early 2010.