God of War is an action-adventure video game series loosely based on Greek mythology, originally created by David Jaffe at Sony's Santa Monica Studio. Debuting in, the series has become a flagship title for the PlayStation brand, consisting of seven games across multiple platforms. An eighth installment is currently in development; it will be a soft reboot for the series and will be loosely based on Norse mythology. The series' story centers around its playable character, Kratos, a Spartan warrior tricked into killing his wife and daughter by his former master, the God of War Ares. Kratos kills Ares at the behest of the goddess Athena and takes his place as the new God of War, but is still haunted by the nightmares of his past. Revealed to be a demigod and the son of Zeus, the King of the Olympian Gods who betrays Kratos, the Spartan then seeks revenge against the gods for their machinations.