The Gaia Saga 2nd Edition rulebook, Gaia Cover Variant. This book contains all of the same rules covered within other versions of the rulebook but with different cover artwork.

Gaia Saga is a universal role-playing system that focuses on as much flexibility for character creation as possible. Using an interesting and unique set of rules, Gaia Saga allows players and game masters alike to experience an ever-changing dice system that grows and develops as your story moves along. This flexible dice system allows characters to endlessly evolve into more powerful beings than you could ever imagine possible in a table top game. The manual includes over thirteen playable races to choose from, each with their own set of ethnic classes to broaden your horizons. It also features lists for job professions, skills, special abilities, spell schools, a personality and emotions engine as well as a leveling system based upon the spending of accrued experience points to any area you desire. You get to upgrade your characters when you want to, as often as you want to, and without the hassle of waiting for multiple game sessions to end just to reach that next level.

The Asphodeus cover version of the Gaia Saga 2nd Edition rulebook.

A source book for the Gaia Saga Universal Role-Playing System. Developed by Rosser Industries to increase the flexibility and choices a player can make when dealing with the workings of magic during game play. The book updates the magic system with new optional rules, a whole slew of new spells to purchase, more magic schools to choose from, new races for character creation and even an entire playable game campaign for players and game masters to explore. The original rulebook for Gaia Saga is required to use this source book properly.

GURPS Voodoo: The Shadow War takes the myths of the mystical religions known as Voudoun and Santeria and gives them a twist, placing the believers and practitioners of Voodoo in the middle of a cosmic struggle. Voodoo priests and the shamans of many ancients cultures have unique views in how they can shape the world; this supplement includes a magic system to replicate those beliefs. The Shadow War is a conflict fought on many fronts. Voodoo Initiates contend with the Lodges, which consist of European magicians who have kept their occult power hidden and consider themselves the secret masters of the Western world. Beneath that struggle, some Initiates have begun to realize, lies a battle between Humankind and beings that have no use for power or wealth - only destruction. Unlike many "dark" RPGs, Voodoo is not about enduring horror, but fighting it. Human Spirit Warriors, monstrous In-Betweener renegades, and even ghosts can join forces and stop the manipulators and deceivers. The world of the Shadow War needs heroes, however frail or flawed they may be. Your characters may just be those heroes.

This is the first textbook dedicated to explaining how artificial intelligence (AI) techniques can be used in and for games. After introductory chapters that explain the background and key techniques in AI and games, the authors explain how to use AI to play games, to generate content for games and to model players. The book will be suitable for undergraduate and graduate courses in games, artificial intelligence, design, human-computer interaction, and computational intelligence, and also for self-study by industrial game developers and practitioners. The authors have developed a website (http://www.gameaibook.org) that complements the material covered in the book with up-to-date exercises, lecture slides and reading.