H1Z1 Just Survive is delivered as Steam cd key after your purchase. H1Z1 Just Survive activation and installation is done entirely on Steam. Internet connection is required. In H1Z1: Just Survive, the H1Z1 zombie virus has crippled civilization. Corrupted by the need to survive, gone are the comforts of society as a new normal permeates the world. You are one of the last remaining humans. Every choice matters, every moment is borrowed time, and every breath could be your last.