From the campaign:
This Kickstarter grants access to a ready to play game system and setting. You'll need dice and that's about it to begin your journeys through a ruined Earth. A quick list of what you can obtain through this kickstarter includes:
The Fall of Man Corebook with all the knowledge you need to play right at the beginning for Pathfinder with PDF conversions for 13th Age, Fate and Castles & Crusades (SIEGE).
A Kickstarter Exclusive 32+ page bonus book full of additional "crunch" content for your players.