How to Use This Book

Starfinder GM Core is one of the central rule books for Starfinder, and it provides guidance on building and running whatever fantastic and futuristic stories you wish to tell. The book also gives information on the Starfinder setting. Rules variants and tools allow you to customize the game, from chases and hacking to vehicles and cinematic starship combat. Lastly, the book provides tips for running a smooth game of Starfinder! Starfinder as a game is all about customization, and this book provides you as the Game Master ways to customize your game just as a player customizes their character. The toolbox nature of GM Core makes it easy to select whatever parts you need for the game you're running at any time, especially in the Building Games and Subsystems chapters. As with any toolbox, you won't need to use everything at once!