Those PC Pack addon - Vampire: The Masquerade – Bloodlines

First-person roleplaying game, based on White Wolf's popular Vampire: The Masquerade pen-and-paper RPG. Vampire: The Masquerade - Bloodlines combines intense first-person action with an open, non-linear world, rich character development and an immersive storyline. The game plunges players into the dark and gritty vampire underworld of modern day L.A. as a creature of the night, interacting with and battling mortals and other creatures of darkness with an incredible array of vampire powers, skills and traits. Developed by Troika, Vampire: The Masquerade - Bloodlines runs on Valve Source Technology - the same game engine technology that powers Half-Life 2.