A working title is a temporary name for a product or project. The usage is especially common in film and tv, gaming, music and publishing.  It is often styled in trade publications as (wt)  and is synonymous with production title and tentative title.
Working titles are used mainly because an official title has not yet been decided upon or to intentionally disguise the real nature of a project.
Working titles are primarily a practical matter, just to prevent confusion as ideas for release titles can keep on changing for a variety of reasons.
For example, while James Bond films are commonly produced under numerical titles such as Bond 22 until the official title is announced as part of its marketing, release titles may also change because of significant changes to the plot during production, as happened with Disney's The Emperor's New Groove, whose working title was Kingdom of the Sun. In some cases a working title may ultimately be used as the release title, as in the case of leading man Samuel L. Jackson insisting on title Snakes on a Plane , after he learned the title was going to be changed to Pacific Air Flight 121 upon release.
Fake production titles are frequently used by high-profile films or television series to prevent undesired attention by the press or fandom, price gouging by suppliers  and casual or targeted theft. Notable examples of ruse titles include Blue Harvest ( Return of the Jedi ), Red Gun ( House of the Dragon ),  and the Batman films Batman Begins , The Dark Knight and The Dark Knight Rises , which were produced under the titles The Intimidation Game, Rory's First Kiss and Magnus Rex. 
Batman is a superhero appearing in American comic books published by DC Comics. The character was created by artist Bob Kane and writer Bill Finger, and debuted in the 27th issue of the comic book Detective Comics on March 30, 1939. In the DC Universe continuity, Batman is the alias of Bruce Wayne, a wealthy American playboy, philanthropist, and industrialist who resides in Gotham City. Batman's origin story features him swearing vengeance against criminals after witnessing the murder of his parents Thomas and Martha as a child, a vendetta tempered with the ideal of justice. He trains himself physically and intellectually, crafts a bat-inspired persona, and monitors the Gotham streets at night. Kane, Finger, and other creators accompanied Batman with supporting characters, including his sidekicks Robin and Batgirl; allies Alfred Pennyworth, James Gordon, and Catwoman; and foes such as the Penguin, the Riddler, Two-Face, and his archenemy, the Joker.
George Raymond Richard Martin, also known as GRRM, is an American novelist, screenwriter, television producer and short story writer. He is the author of the series of epic fantasy novels A Song of Ice and Fire, which were adapted into the Emmy Award-winning HBO series Game of Thrones (2011–2019) and its prequel series House of the Dragon (2022–present). He also helped create the Wild Cards anthology series, and contributed worldbuilding for the 2022 video game Elden Ring.
Frank Miller is an American comic book writer, penciller and inker, novelist, screenwriter, film director, and producer known for his comic book stories and graphic novels such as his run on Daredevil, for which he created the character Elektra, and subsequent Daredevil: Born Again, The Dark Knight Returns, Batman: Year One, Sin City, and 300.
Dark Horse Comics is an American comic book, graphic novel, and manga publisher founded in Milwaukie, Oregon by Mike Richardson in 1986. The company was created using funds earned from Richardson's chain of Portland, Oregon comic book shops known as Pegasus Books and founded in 1980.
Jeffrey Jacob Abrams is an American filmmaker and composer. He is best known for his works in the genres of action, drama, and science fiction. Abrams wrote and produced such films as Regarding Henry (1991), Forever Young (1992), Armageddon (1998), Cloverfield (2008), Star Trek (2009), Star Wars: The Force Awakens (2015), and Star Wars: The Rise of Skywalker (2019).
Batman Beyond is an American superhero animated television series based on the DC Comics superhero Batman. Created and developed by Paul Dini, Bruce Timm, and Alan Burnett and produced by Warner Bros. Animation, the series began airing on January 10, 1999 on Kids' WB, and ended on December 18, 2001. In the United Kingdom, it began airing on September 4, 2000. After 52 episodes spanning three seasons and one direct-to-video feature film, the series was brought to an end in favor of the Justice League animated series, and plans for a fourth season were cancelled.
Titan Publishing Group is the publishing division of Titan Entertainment Group, which was established in 1981. The books division has two main areas of publishing: film and television tie-ins and cinema reference books; and graphic novels and comics references and art titles. Its imprints are Titan Books, Titan Comics and Titan Magazines.
Jonathan Nolan is a British-American screenwriter, producer, director and author. He is the creator of the CBS science fiction series Person of Interest (2011–2016) and co-creator of the HBO science fiction western series Westworld (2016–2022).
Since 1939, Batman has been adapted into various media including film, radio, television, and video games, as well as numerous merchandising items. The Batman franchise has become one of the highest-grossing media franchises of all time.
The fictional superhero Batman, who appears in American comic books published by DC Comics, has appeared in various films since his inception. Created by Bob Kane and Bill Finger, the character first starred in two serial films in the 1940s: Batman and Batman and Robin. The character also appeared in the 1966 film Batman, which was a feature film adaptation of the 1960s Batman TV series starring Adam West and Burt Ward, who also starred in the film. Toward the end of the 1980s, the Warner Bros. studio began producing a series of feature films starring Batman, beginning with the 1989 film Batman, directed by Tim Burton and starring Michael Keaton. Burton and Keaton returned for the 1992 sequel Batman Returns, and in 1995, Joel Schumacher directed Batman Forever with Val Kilmer as Batman. Schumacher also directed the 1997 sequel Batman & Robin, which starred George Clooney. Batman & Robin was poorly received by both critics and fans, leading to the cancellation of Batman Unchained.
Matt Reeves is an American film director, producer, and screenwriter. He first gained recognition for the WB drama series Felicity (1998–2002), which he co-created with J. J. Abrams. Reeves came to widespread attention for directing the hit monster film Cloverfield (2008). He also directed the romantic vampire drama Let Me In (2010), and the critically acclaimed science fiction sequels Dawn of the Planet of the Apes (2014) and War for the Planet of the Apes (2017). He directed the superhero film The Batman (2022), which stars Robert Pattinson as the title character.
Batman: The Dark Knight was a cancelled action-stealth game for the PlayStation 3 and Xbox 360 developed by Pandemic Studios from September 2006 until its cancellation in October 2008. It would have been the first open world video game to feature the DC Comics superhero Batman and was based on Christopher Nolan's film The Dark Knight. In Batman: The Dark Knight, the player controlled Batman, who could freely explore Gotham City, drive vehicles, and perform missions. Pandemic was given access to the film's script and other materials, and the film's cast would have reprised their roles for the game.
Game of Thrones is an American fantasy drama television series created by David Benioff and D. B. Weiss for HBO. It is an adaptation of A Song of Ice and Fire, a series of fantasy novels by George R. R. Martin, the first of which is A Game of Thrones. The show was shot in the United Kingdom, Canada, Croatia, Iceland, Malta, Morocco, and Spain. It premiered on HBO in the United States on April 17, 2011, and concluded on May 19, 2019, with 73 episodes broadcast over eight seasons.
The Dark Knight Rises is a 2012 superhero film directed by Christopher Nolan, who co-wrote the screenplay with his brother Jonathan Nolan, and the story with David S. Goyer. Based on the DC Comics character Batman, it is the final installment in Nolan's The Dark Knight trilogy, and the sequel to The Dark Knight (2008). The film stars Christian Bale as Bruce Wayne / Batman, alongside Michael Caine, Gary Oldman, Anne Hathaway, Tom Hardy, Marion Cotillard, Joseph Gordon Levitt, and Morgan Freeman. Eight years after the events of The Dark Knight, the revolutionary Bane forces Bruce Wayne to resume his role as Batman and save Gotham City from nuclear destruction.
Flint Dille is an American screenwriter, game designer and novelist. He is best known for his animated work on Transformers, G.I. Joe, An American Tail: Fievel Goes West, and his game-writing, The Chronicles of Riddick: Escape from Butcher Bay, and Dead to Rights, as well as a non-fiction book written with John Zuur Platten, The Ultimate Guide to Video Game Writing and Design .
The Lego Batman Movie is a 2017 computer-animated superhero comedy film produced by Warner Animation Group, DC Entertainment, RatPac Entertainment, Lego System A/S, Lin Pictures, Lord Miller Productions, and Vertigo Entertainment, and distributed by Warner Bros. Pictures. It was directed by Chris McKay from a screenplay by Seth Grahame-Smith, Chris McKenna, Erik Sommers, Jared Stern, and John Whittington. Based on the characters from the DC Universe created by DC Comics and the Lego DC Super Heroes' Batman toy line, the film is a collaboration between production houses from the United States, Australia, and Denmark, the first spin-off in The Lego Movie franchise and the second installment overall. The film features Will Arnett reprising his role as Batman from The Lego Movie alongside Zach Galifianakis, Michael Cera, Rosario Dawson, and Ralph Fiennes. The story follows the title character (Arnett) as he attempts to overcome his greatest fear to stop the Joker's (Galifianakis) latest plan.
The DC Extended Universe (DCEU) is an American media franchise and shared universe centered on a series of superhero films and television series produced by DC Studios and distributed by Warner Bros. Pictures. It is based on characters that appear in American comic books published by DC Comics. The DCEU also includes comic books, short films, novels, and video games. Like the original DC Universe in comic books, the DCEU was established by crossing over common plot elements, settings, cast, and characters.
The Batman is a 2022 American superhero film based on the DC Comics character Batman. Produced by DC Films, 6th & Idaho, and Dylan Clark Productions, and distributed by Warner Bros. Pictures, it is a reboot of the Batman film franchise. The film was directed by Matt Reeves, who wrote the screenplay with Peter Craig. It stars Robert Pattinson as Bruce Wayne / Batman alongside Zoë Kravitz, Paul Dano, Jeffrey Wright, John Turturro, Peter Sarsgaard, Andy Serkis, and Colin Farrell. The film sees Batman, who has been fighting crime in Gotham City for two years, uncover corruption while pursuing the Riddler (Dano), a serial killer who targets Gotham's corrupt elite.
The Lego Movie is an American media franchise based on Lego construction toys. It began with the 2014 film The Lego Movie, which was directed and written by Phil Lord and Christopher Miller. The success of the film led to the release of two licensed video games, a 4D film theme park attraction, two spin-off films titled The Lego Batman Movie and The Lego Ninjago Movie, which were released in 2017, Unikitty! an animated television series that also came out in the same year, and the sequel to the original film titled The Lego Movie 2: The Second Part in 2019. Plans for a third spin-off film and a sequel to The Lego Batman Movie were later shelved. The franchise has received a generally positive critical reception, with the exception of The Lego Ninjago Movie which received mixed reviews, and has grossed $1 billion at the worldwide box office. While Warner Bros. still owned the rights to their run of the franchise from 2014 to 2020, including the Unikitty! animated television series, Universal Pictures bought the rights to make plans for an upcoming Lego Movie as part of a 5-year deal.
House of the Dragon is an American fantasy drama television series created by George R. R. Martin and Ryan Condal for HBO. A prequel to Game of Thrones (2011–2019), it is the second television series in the A Song of Ice and Fire franchise. Condal and Miguel Sapochnik served as the showrunners for the first season. Based on Martin's 2018 novel Fire & Blood, the series is set about 100 years after the Seven Kingdoms are united by the Targaryen Conquest, nearly 200 years before the events of Game of Thrones, and 172 years before the birth of Daenerys Targaryen. Featuring an ensemble cast, the show portrays the events leading up to the beginning of the decline of House Targaryen, a devastating war of succession known as the "Dance of the Dragons".