A story on GameSpot reveals that the next episode in the 'Vampire: The Masquerade' series is to use Valves recently announced 3D engine, Source. Heres a snip:

    "... The game will be powered by Valve Software's Source engine, which is also being used by Valve to develop Half-Life 2. According to Valve Software cofounder Gabe Newell, "With Vampire, Troika is proving [that the] Source [engine] can reach beyond the world of FPS games. The character system, rendering abilities, and contextual AI features of Source, combined with the veteran RPG design talent at Troika, is a great representation of the innovation we hope to enable with this technology."

    In the game, players will play as a fledgling vampire who will belong to one of seven vampire clans, each of which has its own distinctive strengths and abilities, including superhuman strength and speed, invisibility, and mind control, to name a few. As players progress through the game, they'll earn experience points that they can spend on improving their powers. These abilities and the game's major vampire factions will be drawn from White Wolf's Vampire: The Masquerade pen-and-paper game. "We are very excited to have Activision and Troika producing Vampire: The Masquerade - Bloodlines," said Chris McDonough of White Wolf Games. "They are among the elite few companies capable of taking our property into the world of first-person action gaming while still maintaining the story, setting, characters, and role-playing aspects of the game."