Gamma World: Game Masters Guide (Gamma World d20 3.5 Roleplaying)

It's a big world, with many secrets waiting to be revealed: mysterious landscapes, the changes wrought by war and disaster, cryptic alliances pursuing sinister goals of their own. They're all in here ready for you to use in your Gamma World campaign.

This book gives you solid, practical advice. Learn how to modify the rules for the right balance of adventure and danger, how to convey your chosen genre in description and pacing and how to plan and run a campaign from exciting start to rousing finish.

You've got good ideas - put them to work!