Sierra Entertainment today announced F.E.A.R. Perseus Mandate, an all-new standalone expansion pack for PC and F.E.A.R. Files, a complete standalone expansion pack series for Xbox 360. Both are scheduled for release this Fall.

Perseus Mandate will feature a brand new team that tells the story of the original game through a different perspective. The campaign will reveal a parallel story allowing players to take the role of a different F.E.A.R. soldier and battle new enemies that the original team never saw coming.

Meanwhile, Files will feature the new Perseus Mandate campaign, as well as Extraction Point, offering both expansions as a single package on the console. More details and media will be revealed at the show.