Kratos is coming back to the PlayStation 3 in God of War: Ascension. Rumblings of God of War IV have been floating around for months, but a PlayStation Facebook post last week kicked things into overdrive. Today, Amazon posted the game's box art and a teaser trailer. God of War: AscensionAlthough the trailer shows no gameplay, it features the familiar narration of the Titan Gaia as she sets up what certainly sounds like a prequel to the five God of War games that are already out. In the teaser, Gaia states that there was a time before Kratos became the Ghost of Sparta and before rage consumed him. "A time when in spite of the madness that plagued him, Kratos would break his blood oath to an unjust God," Gaia says. "A time when he will no longer be bound in blood." The God of War story millions have already played picks up after Kratos has pledged allegiance to Ares, had the Blades of Chaos burned into his flesh, and killed his wife and daughter after an Ares trick. Gaia's words make it sound as if God of War: Ascension chronicles Kratos' time before all that -- when he was leading the Spartan army and perhaps "ascending" to his legendary status.