Question: GURPS Banestorm and GURPS Infinite Worlds are setting sourcebooks and supplements for what edition of the GURPS Role-Playing Game?
Sentence (from "GURPS Infinite Worlds"): It expands upon the campaign setting of conflict between the "Infinity Patrol", which is the time-travel agency on "our" Earth, referred to as Homeline, and "Centrum" across a multiplicity of alternate history Earths.
Relevant evidence: No