Gamma World Player's Handbook: A Campaign Setting for d20 Roleplaying, by Skellams, Geoff, Rautalahti, Mikko, Eller, Ian, Baugh, Bruce
Gamma World: Mutants and Machines (Gamma World d20 3.5 Roleplaying), by Wendig, Chuck, O'Duffy, Patrick, Hanrahan, Gareth, Bolack, David
Legion of Gold (Gamma World Module, No. GW1), by Luke Gygax, Paul Reiche III, Gary Gygax
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