From the introduction: The G.R.E.B. is a tabletop role-playing game where the players take on the roles of genetic rejects from the various genetic engineering projects of the future’s past, while they try to maintain something that could be misconstrued as employment. This task is never easy given a world that’s a disturbingly comedic parody of what everyone thought the future was supposed to be. The G.R.E.B. is a humor driven game where some of the wildest ideas are explored, expanded upon, exploited, and sometimes exterminated for the betterment of all.