Gintama Official Character Book "Gin-channel!": A data book that Sorachi was heavily involved in. Includes a plethora of information about the characters and the setting of Gintama, as well as comments, interview, and stickers. Released on the 4th of April 2006.
Gintama Official Character Book "Gintama Grade 5": The second official character book. Includes character bios on over 200 characters, The Birth of the White Yaksha poster, galleries, info on Sorachi's office, and interview. Released on the 5th of September 2009.
Gintama Anime Chatter-Chatter Box: Celebrating 100 anime episodes, Sorachi and the anime staff collaborates on an extensive coverage of the Gintama anime. Features commentaries, original double-sided poster, DVD illustrations, episode summaries, long discussions with Sorachi/staff/actors, stickers, cards, and paper crafts. Released on the 4th of April 2008.
Gintama Anime Clatter-Clatter Theater: Continuation of the anime data book series. Covers episodes 101-201 and includes new content similar to the previous book. Released on the 5th of April 2011.
Gintama Character Book vol.1: The first of three "visual character books" for the Gintama anime. Includes a reversible poster, memories of four years, Kabukicho winter festival poster, stickers, character biographies, and galleries. Released on the 4th of June 2010.
Gintama Class 3-Z Ginpachi-sensei: The light novel based on the Gintama extra, "Class 3-Z Ginpachi-sensei". Fully packed with original author Sorachi Hideaki's illustrations, the campus life of the Gintama characters unfolds!