The Vampiric Condition
Instead of Generation, all characters have Blood Potency instead. It starts at 1 and increases with XP. Otherwise it acts like generation with the following exception:
At Blood Potency > 2, the vampire may no longer feed on animals
At Blood Potency > 6, the vampire may no longer feed on humans
Characters in Torpor often dream, and when they awaken have unreliable memories.
Characters in Torpor may elect to reduce Blood Potency. This is performed by erasing XP at twice the rate it is usually earned (ie. if you earn 4xp per game, then you erase 8xp per game).