From the back of the book: This manual contains the latest edition of the critically acclaimed Silhouette rules. Use them to propel your adventures in the CORE Command universe – or any setting in a wide variety of genres ranging from science-fiction, fantasy, anime, horror, modern age and more. It's an action-packed game in which you control bigger-than-life characters! The Silhouette CORE rules drive all Dream Pod 9 roleplaying games: - CORE Command - Gear Krieg - Heavy Gear - Jovian Chronicles - Tribe 8 and many more settings: Fantasy, Cyberpunk, Horror, Western, Espionage/Conspiracy, Modern, Comedy, Anime and Historical. The book also contains Silhouette/d20 conversion rules, allowing you to benefit from the extensive d20-based library and the existing Dream Pod 9 Silhouette products.