deadEarth Game Master's Handbook

From the introduction: As the Game Master it is your job to create and control the world in which your player's characters exist. It is your job to guide them through the wasted world of deadEarth. But sometimes even the guide need needs some help. Use this book as a supplement to the Player's Handbook to get yourself started in the world of deadEarth; use it as a reference when you get lost.