Afraid of Monsters, a Survival Horror mod, has been released for Half Life one. Now, don’t let the “Half Life 1” part throw you off, AOM is one trip that no mod has yet to deliver with Source. Afraid of Monsters puts you in the shoes of David Leatherhoff, a drug addict that simply can’t stop. The mod takes you through many various environments, poking and clawing at your deepest fears. For more information, visit the mod’s ModDB profile at here.
Be sure to play with the lights out and the volume loud.