Question: Eden Studios, Inc. is an American role-playing game publisher founded in 1996, Eden Studios is best known for the Buffyverse role-playing games - the "Buffy the Vampire Slayer" and "Angel" role-playing games - are complementary, officially licensed role-playing games (RPGs) published by Eden Studios, Inc, The "Buffy the Vampire Slayer Core Rulebook", was published in what year?
Sentence (from "Buffyverse role-playing games"): Both games use a streamlined (or "Cinematic") version of Eden Studios' popular "Unisystem" game engine, also featured in "CJ Carella's WitchCraft" and "All Flesh Must Be Eaten", two of Eden's better-known original product lines.
Relevant evidence: No