Unisystem is a generic role-playing game system produced by Eden Studios, Inc. It is used in All Flesh Must Be Eaten, the Buffyverse role-playing games, CJ Carella's WitchCraft, Conspiracy X (2nd Ed.), and several other games. Games designed using Unisystem have been nominated for, and won, Origins Awards.Unisystem was developed by C.J. Carella for the first editions of his WitchCraft and Armageddon role-playing games,published by Myrmidion Press.