If you don't have a PlayStation 3 for the compiled versions, God of War, God of War II, God of War III, God of War: Ascension, God of War: Chains of Olympus and God of War: Ghost of Sparta, all are available as part of the PlayStation Now service.
God of War: Chains of Olympus is an action-adventure hack and slash video game developed by Ready at Dawn, and published by Sony Computer Entertainment (SCE). It was first released for the PlayStation Portable (PSP) handheld console on March 4, 2008.