In addition to World of Darkness and Buffy other games are Smallville (which is unfortunately out of print) and, from what I hear, Monsterhearts.
Smallville is designed for soap opera with powered beings and easily hacked. Rpgnet has threads on hacking Smallville for True Blood. The hacks are not major and involve creating a few new Heritages, renaming/adjusting the values. and, possibly, adding a Hunger Stress Track. The only other things is tailoring the Pathway system and, if a google search for either Smallville RPG True Blood Pathways or Cortex Plus True Blood Pathways does not turn anything up (and at least one does), Pathways exist online for Camarillaville (a Vampire hack for Smallville) and for Vampire Diaries hacks ( either of which should work).
Smallville is designed for soap opera with powered beings and easily hacked. Rpgnet has threads on hacking Smallville for True Blood. The hacks are not major and involve creating a few new Heritages, renaming/adjusting the values. and, possibly, adding a Hunger Stress Track. The only other things is tailoring the Pathway system and, if a google search for either Smallville RPG True Blood Pathways or Cortex Plus True Blood Pathways does not turn anything up (and at least one does), Pathways exist online for Camarillaville (a Vampire hack for Smallville) and for Vampire Diaries hacks ( either of which should work).