Fahrenheit

Fahrenheit (named Indigo Prophecy in North America) is a video game developed by Quantic Dream in 2005. It was Quantic Dream's previous game before Heavy Rain, and bears a resemblance to it in terms of gameplay and style. Originally released for the PlayStation 2 and Xbox, it became available for download for the Xbox 360 in December 2007. It was rereleased as Fahrenheit: Indigo Prophecy Remastered for Windows, Android, iOS, Linux, and macOS in January 2015 and for the PlayStation 4 in August 2016, and a PS4 exclusive called Fahrenheit: 15th Anniversary Edition that included a physical edition of the game in a specially created case and sleeve, a sticker set, a high-quality printed artbook, and a thank you letter from the development team was released in January 2021.

The plot of Fahrenheit revolves around Lucas Kane, who murders a man in the restroom of a diner when possessed, and his pursuit by police detectives Carla Valenti and Tyler Miles. They gradually learn about the circumstances surrounding the murder and the Indigo Child, a young girl whose secret grants power that multiple organizations want for themselves.

In the endings of Heavy Rain where Shaun survives and Ethan survives and stays out of prison, Ethan, Shaun, and potentially Madison (if she survives and is forgiven by Ethan) move into a condominium that appears similar, but not identical, to Lucas Kane's apartment. Some of the distinguishing features of Lucas' apartment, such as the glass door leading to an outside balcony, are missing from Ethan's condo. Ethan states that a "friend of a friend" let him get the condo, and players have speculated he is referring to Lucas, though it is not confirmed.

The setting of Heavy Rain (and thus the location of Ethan's condominium) is likely Philadelphia, as indicated by the Philadelphia map in Scott Shelby's office, the Philadelphia addresses of Lauren Winter's husband Allan and Jackson "Mad Jack" Neville, and Quantic Dream's David Cage explicitly stating that the city Heavy Rain is set in is modeled after Philadelphia. On the other hand, the setting of Fahrenheit (and thus the location of Lucas' apartment) is New York. However, the location of Ethan's condo can be debated, as the City apparently experiences long periods of rain (and this is the case in several other endings that are clearly set there, such as Madison's "Square One" ending) yet this is not seen in the endings where Ethan moves into the condo; moreover, it is unclear how much time has passed between the game and the endings. Therefore, the possibility exists that Ethan and Shaun (and potentially Madison) left the City after the game's conclusion, which means that the condo could in fact be Lucas' apartment in New York.

Some voice and model actors appear in both Fahrenheit and Heavy Rain, including David Gasman, Barbara Scaff, Christian Erickson, and others.