VGB writes: "The PlayStation Portable-exclusive God of War: Chains of Olympus is a prequel to the first installment of the franchise.
In this game you experience Kratos' journey during the 10 years of servitude to the Gods of Olympus.
In God of War, Kratos, after being deceived into killing his wife and daughter, denounced his service to Ares. In order to seek absolution from his past sins, the Ghost of Sparta pledged himself as a champion to the Gods for the years to follow – these brutal crusades, in the name of Olympus, became legendary throughout the ancient world. In God of War: Chains of Olympus, Kratos will journey to lands that no mortal has ever walked upon."