Darkness Falls
Forum based game. Players can be human, vampire, slayer or animal counterparts.

Yahoo!: Immortal Blood
Forum based vampire roleplaying game.

Vampire Tavern
Real time chat based game. Set in the Bermuda Triangle. Players can play Vampires, Wolfin and Elves. Also offers family backgrounds and messageboards.

Enter The Darkness
Forum based game. Players can be vampires, slayers or normal humans.

Darknight Sanctuary
Forum based vampire roleplaying, other appropriate races and classes permitted.

The Vampire World
Web browser based vampire roleplaying game, characters gain levels and equipment through fighting mobs.

Vampire's Opera
Forum based vampire roleplaying featuring four different clans for characters to join.

Alonia Slayers School
[Messageboards] Set in a school for young Vampire slayers. Universe based on an amalgamation of Buffy and Harry Potter themes.

Vampires! A Dark Alleyway
[Browser Based] Players move around on a grid of tiles, drinking blood from other vampires and humans to progress. Rules and news.