- For the chapter of the same name, see Black Sun (chapter).
- For the track from the soundtrack, see Black Sun (track).
"Black Sun" is the codename for the massive rift created at the DPA complex beneath the Pentagon in Washington, D.C. At the climax of the game's storyline, a grief-crazed Nathan Dawkins opens it in hopes of merging the Infraworld with the physical world and allowing him to see his wife and daughter again. With help from Aiden, Ryan Clayton, and Cole Freeman, Jodie Holmes sets out to shut down the condenser and stop the rift from swallowing up the entire world.