Inside Odyssey Prime you will find: Lots of details on Project Odyssey, including its history, goals, personnel and methods of operation. Insight into the end of the world and what humanity is doing to save itself. Guidelines on running Odyssey Team and Damage Control Team campaigns side-by-side. 12 new advanced classes and 2 that have been revised for d20 Modern and 4 new archetypes for the Unisystem. 8 new skill uses, 6 new skills and over 30 new feats for d20 Modern, along with 4 new skills, 4 new Qualities and 3 new Drawbacks for the Unisystem. Enough new weapons, electronics, explosives and vehicles in both d20 Modern and Unisystem rules to outfit your players and keep them happy for a long time. Plenty of adventure seeds, rules and guidelines for adventure and world building, and suggestions on adapting third-party products to your needs. Rules on making your game more dramatic. Gear-up, strap in and get ready to go on the wildest ride humanity has ever known because the fate of the world rests on your shoulders. This file is fully bookmarked and has a hyperlinked table of contents. 'd20 System' and the d20 System logo are trademarks of Wizards of the Coast, Inc. in the United States and other countries and are used with permission.