Jurassic Park is an American media franchise consisting of novels, films, comics, and video games centering on a disastrous attempt to create a theme park of cloned dinosaurs. It began in 1990 when Universal Studios bought the rights to the novel by Michael Crichton before it was even published. The book was successful, as was the 1993 film adaptation which led to two sequels, although the last was not based on a novel, as the previous films were. The software developers Ocean Software, BlueSky Software, Sega of America, and Telltale Games have had the rights to developing video games since the 1993 film, and numerous games have been produced. The Jurassic Park Ultimate Trilogy was released on Blu-ray Disc and DVD on October 25, 2011 in North America. Jurassic Park was re-released in 3D on April 5, 2013. The fourth film, Jurassic World, was originally scheduled to be released on June 13, 2014 but has since been pushed back to a June 12, 2015 release. In March 2013, Colin Trevorrow was announced as the director. Patrick Crowley and Frank Marshall are still signed on as producers with a script written by Derek Connolly and Colin Trevorrow.