Okay its been AGES since we at Belegarth in Twin Falls played this, and the rules are slipping my mind at the moment, but from what I can remember is everyone starts out with a single blue weapon, free for all style, after every person you kill, they are resurected into Zombies (by touching your weapon to their body), and follow you around like a zombi (Unable to run of course). The persons being followed are necromancers, the ones who have died are zombies!
If a zombie kills someone they just die, because zombies cannot have zombie followers, until a necromancer goes up to them and touches their weapon on them. Last Necro standing wins.
Its fun, can be chaotic, but its a good excuse to act like a zombie.
Brainnnsss?