The Pathfinder GM Core includes:

• The rules you need to run a Pathfinder game, including guidelines for creating challenging encounters, determining success, and distributing rewards.
• Tips aimed at helping you become an incredible Game Master, along with tools that ensure you and all the players at your table will have a safe and enjoyable experience.
• Guidelines for creating your own content, from campaigns and adventures to hazards and monsters.
• Sub-systems of rules that will help you manage a wide range of gameplay situations, including rules for chases, duels, investigations, infiltration, and more!
• A guide to the world of Lost Omens, featuring several important regions, an examination of the peoples and cultures of the world, and a look at what lies beyond the veil of the universe!
• Fully integrated corrections from the first 4 years of Pathfinder Second Edition, including improvements to rods and tambours and brand-new magical items!
• Published under the new Open RPG Creative (ORC) license, providing players and Game Masters even more freedom to create their own works based on Pathfinder Second Edition.

The compressed edition offers the same content as the standard edition, in a smaller softcover size for a lower price and better portability.