Fahrenheit (Indigo Prophecy in North America) is a cinematic interactive drama action-adventure video game developed by Quantic Dream and published by Atari for the PlayStation 2 and Xbox. The director's cut and uncut versions were later released for Microsoft Windows. Fahrenheit has sold over 700,000 units worldwide since it was released in September 2005 and has won several awards. In December 4, 2007, Atari released the game for Xbox 360 through Xbox Originals. In November 8, 2011, Quantic Dream released the game uncensored for PC through GOG.com.

In this paranormal thriller, New York City is stunned by a series of mysterious murders that follow the same pattern: ordinary people become possessed and kill absolute strangers in public. The main characters of the story must uncover the supernatural forces behind these crimes.

A good deal of publicity was generated from the developer's rejection of conventional game genre labeling for the title; Quantic Dream prefers to brand it as the first truly "interactive film" rather than an adventure or third-person action title.[citation needed] This game features a large amount of motion captured animation as well as branching story lines, split screen cameras and an interface designed to be intuitive and realistic. Event triggers in the game are also mainly time-based, as opposed to the more common player-initiated progression found in most games.