"Nightlife is set in New York City in the then near-future of the 1990s. Players take on the roles of monsters, divided into several races and collectively referred to as "Kin," living secretly among human society, whom they refer to as "The Herd."
All of the Kin have certain attributes in common. They are immortal unless killed by special methods, immune to most diseases, and cannot be photographed. Most importantly, Kin have the ability to steal the life force of humans in order to survive, through a process called Drain. The Kin are divided into a number of groups, called Factions, who vary in their attitude toward humans and their willingness to be discreet about their activities. Players are generally encouraged to play Kin who prefer to defend Herd as well as Kin society, and to not kill mercilessly or wantonly.
The nightlife of Kin in New York City is one of the primary foci of the game. Kin spend much of their time preoccupied with subculture music and fashion, and the game's lists of equipment and clothing available to players assumes that they will adopt underground, cutting-edge, and designer styles. The city contains several important nightclubs which are run by and for Kin. In addition, a large part of the game is the constant street fighting between members of various Kin factions."
Source: Wikipedia, "Nightlife_(role-playing_game)," available under the CC-BY-SA License.