This book is very old school, it was published before Werewolf: The Apocalypse. But old doesn't mean there is no use for this supplement! On the contrary there is useful information for the Storyteller for her to catch up with the mood and theme of Mummies. It also has a short story with interesting plot devices that can be used in any other game. To fully use this book you will need a core rulebook from the main game lines (Vampire, Werewolf, Mage).