From Namco Bandai: What if what you do as a player in a game impacted your real world? What is reality? .hack has pursued this innovative concept in the previous four-part series where “The World” was ultimately destroyed. Years after the events of the first .hack series, “The World” was rebuilt. .hack//G.U. Vol. 1: Rebirth is an entirely new installment to the .hack universe and the beginning of a new trilogy.