of the USS Protostar in Star Trek: Prodigy. List of episodes The series consists of 172 episodes, all 45 minutes in length, excluding advertisement breaks. Four episodes, "Caretaker", "Dark Frontier", "Flesh and Blood" and "Endgame" originally aired as 90 minute episodes (excluding advertisement breaks). In syndication these four episodes are each split into two episodes (45 minutes in length). Tie-in media Novels A total of 26 numbered books were released during the series' original run from 1995 to 2001. They include novelizations of the first episode, "Caretaker", "The Escape", "Violations", "Ragnarok", and novelizations of the episodes "Flashback", "Day of Honor", "Equinox" and "Endgame". Also, "unnumbered books", which are still part of the series, were released, though not part of the official release. These novels consist of episode novelizations except for Caretaker, Mosaic (a biography of Kathryn Janeway), Pathways (a novel in which the biography of various crew members, including all of the senior staff, is given); and The Nanotech War, a novel released in 2002, one year after the series' finale. Book relaunch A series of novels focusing on the continuing adventures of Voyager following the television series finale was implemented in 2003, much as Pocket Books did with the Deep Space Nine relaunch novel series, which features stories placed after the finale of that show. In the relaunch, several characters are reassigned while others are promoted but stay aboard Voyager. These changes include Janeway's promotion to admiral, Chakotay becoming captain of Voyager and breaking up with Seven of Nine, Tuvok leaving the ship to serve as tactical officer under William Riker, and Tom Paris's promotion to first officer on the Voyager. The series also introduces several new characters. The series began with Homecoming and The Farther Shore in 2003, a direct sequel to the series' finale, "Endgame". These were followed in 2004 by Spirit Walk: Old Wounds and Spirit Walk: Enemy of My Enemy. Under the direction of a new author, 2009 brought forth two more additions to the series: Full Circle and Unworthy. In 2011, another book by the same author called Children of the Storm was released. Other novels—some set during the relaunch period, others during the show's broadcast run—have been published. Video games Three video games based specifically on Voyager were released: Star Trek: Voyager – Elite Force for PC (2000) and PS2 (2001), the arcade game Star Trek: Voyager – The Arcade Game (2002) and