GURPS Alternate Earths Tweet Brand New, 1 In stock $18.00 Description Alternative Earths for a GURPS Time Travel campaign. Details Publisher: Steve Jackson Games Year: 1996 Artist: Alan Gutierrez, John Hartwell Category: Campaign Setting Designer: Kenneth Hite, Craig Neumeier, Michael S. Schiffer Genre: Science Fiction, Time / Dimension Travel ISBN: 1556343183