Indiana Jones Chronicles" explains how Indiana becomes solitary and less idealistic following his service in World War I. In "Indiana Jones and the Kingdom of the Crystal Skull", Jones is older and wiser, whereas his sidekicks Mutt and Mac are youthfully arrogant and greedy, respectively. Indiana Jones is modeled after the strong-jawed heroes of the matinée serials and pulp magazines that George Lucas and Steven Spielberg enjoyed in their childhoods (such as the Republic Pictures serials, and the Doc Savage series). Sir H. Rider Haggard's safari guide/big game hunter Allan Quatermain of "King Solomon's Mines", who dates back to 1885, is a
Indiana Jones and the Kingdom of the Crystal Skull the past films. Lego also released a series of computer-animated spoofs, "Lego Indiana Jones and the Raiders of the Lost Brick", directed by Peder Pedersen. Stern Pinball released a new Indiana Jones pinball machine, designed by John Borg, based on all four films. From October 2007 to April 2008, the re-edited episodes of "The Young Indiana Jones Chronicles" were released in three DVD box sets. Random House, Dark Horse Comics, Diamond Comic Distributors, Scholastic, and DK published books, including James Rollins' novelization of "Kingdom of the Crystal Skull", a two-issue comic book adaptation written by John Jackson Miller and drawn