God of War is an action-adventure video game developed by Santa Monica Studio and published by Sony Interactive Entertainment (SIE). Released on April 20, 2018, for the PlayStation 4 (PS4) console, it is the eighth installment in the God of War series, the eighth chronologically, and the sequel to 2010's God of War III. Unlike previous games, which were loosely based on Greek mythology, this installment is loosely based on Norse mythology, with the majority of it set in ancient Norway in the realm of Midgard. For the first time in the series, there are two main protagonists: Kratos, the former Greek God of War who remains as the only playable character, and he is joined by his young son Atreus; at times, the player may passively control him. Following the death of Kratos' second wife and Atreus' mother, they journey to fulfill her promise to spread her ashes at the highest peak of the nine realms. Kratos keeps his troubled past a secret from Atreus, who is unaware of his divine nature. Along their journey, they encounter monsters and gods of the Norse world.