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Sony Interactive Entertainment (SIE) has published all games except the mobile phone installment, which was published by Sony Pictures Digital. Santa Monica has developed all main entries, while Ready at Dawn and Javaground/ Sony Online Entertainment-Los Angeles (SOE-LA) developed the three side games. The Greek-based games see Kratos follow a path of vengeance due to the machinations of the Olympian gods, while the Norse-based games, which introduce his son Atreus as a secondary protagonist, show an older Kratos on a path of redemption and inadvertently coming into conflict with the Norse gods. This sets off a series of events that leads to wars with the different mythological pantheons. Based on ancient mythologies, the story follows Kratos, a Spartan warrior and later the Greek God of War, who was tricked into killing his family by his former master, the original Greek God of War Ares. It began in 2005 on the PlayStation 2 (PS2) video game console and has become a flagship series for PlayStation, consisting of nine installments across multiple platforms. God of War is an action-adventure game franchise created by David Jaffe at Sony's Santa Monica Studio.
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