Five directors have worked on the series: James Wan, Darren Lynn Bousman, David Hackl, Kevin Greutert and The Spierig Brothers while Whannell, Bousman, Patrick Melton, Marcus Dunstan, Josh Stolberg and Peter Goldfinger have written the scripts. After its immensely successful opening weekend, the first of many sequels was immediately green-lit. It was ultimately successful, and, in 2004, the first installment debuted at the Sundance Film Festival, and was released theatrically that October by Lionsgate. In 2003, Wan and Whannell made a short film to help pitch a potential feature film concept. Despite the fact that Kramer was killed in Saw III, the films continued to focus on his posthumous influence, particularly by his apprentices, and explore his character via flashbacks.

Rather than killing his victims outright, he traps them in situations that he calls 'tests' or 'games' to test their will to live through physical or psychological torture, believing that if they survive, they will be 'rehabilitated'. John Kramer was introduced briefly in Saw and developed in more detail in Saw II and the subsequent films. The first eight films primarily revolve around the fictional serial killer John 'Jigsaw' Kramer, while the ninth movie revolves around a copycat killer while still keeping continuity with the previous films. Saw is a horror franchise created by Australian film makers James Wan and Leigh Whannell, consisting of nine feature films and additional media.

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