A demo of Sierra's new F.E.A.R. expansion, F.E.A.R. Perseus Mandate, is out now for download.
Weighing in at 735MB, the demo features the level, Underground.
F.E.A.R. Perseus Mandate is an expansion pack for PC that drops you into the boots of a new special forces F.E.A.R. combatant in a storyline that runs parallel to that of the original game.
You can download the demo here.