Vampires. Bloodsucking monsters. Freaks of nature. The undead.

 All of these discriptors fit well for White Wolf's Vampire: The Masquerade. A game in which you play a Vampire, and all of its social interactions with other vampires and with the world in general, as you hide from both the light of day and from those who would kill you if they found out what you were.

 All in all, not a terrible game, but it could have been done much better.