The production of the original Justice League was fraught with difficulty. Following the tragic death of his daughter, Zack Snyder left the project in May 2017. Warner Bros. hired Joss Whedon to finish the film, resulting in extensive reshoots and a two-hour theatrical cut that was criticized for its inconsistent tone and incomplete narrative.

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The success of the Snyder Cut has sparked a broader conversation about the role of directors' cuts and the value of artistic integrity in the film industry. It has also raised questions about the potential for other directors' cuts to be released, offering fans a chance to experience films in their intended form.

In 2020, WarnerMedia announced that Zack Snyder's original version of "Justice League" would be released on HBO Max, a relatively new streaming service. The news was met with jubilation from fans, who had been clamoring for the Snyder Cut for years.

But the truth was more tantalizing: it did exist. Snyder had secretly shown rough cuts to friends and crew. Cinematographer Fabian Wagner and composer Junkie XL had confirmed its existence. The turning point came in 2020, when HBO Max was launching and needed a killer app. Combined with the unexpected success of the movement and Snyder’s own directorial diplomacy, Warner Bros. relented. With an additional $70 million for post-production, reshoots, and a new score, Zack Snyder’s Justice League was greenlit.

The 2021 version is essentially a different movie, doubling the runtime and changing the narrative structure: Zack Snyder's Justice League film comparison - Facebook

The theatrical release of "Justice League" received mixed reviews from critics and underperformed at the box office, sparking a heated debate among fans and critics about the film's quality and the circumstances surrounding its production. This controversy led to the emergence of a passionate movement advocating for the release of Zack Snyder's original version of the film, dubbed the "Snyder Cut."