God of War: Ghost of Sparta Announced for PSP
Helmed by God of War: Chains of Olympus developer Ready At Dawn with assistance from the series' creators at Sony's Santa Monica Studio, Ghost of Sparta is set after the original God of War to tell "the story of Kratos' ascension to power as the God of War."
With the bizarre and nonsensical selling point of "providing over 25% more gameplay," God of War: Ghost of Sparta is scheduled for release "later this year in 2010."
From The Chatty
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They are probably referring to 25% more gameplay than Chains of Olympus, which was pretty short.