From the IGN preview:
This comment led him directly into speaking about the plot of God of War III and what it encompasses. Picking up directly where God of War II left off, Kratos will ride Gaia as she and her fellow titans scale Mount Olympus to bring the fight to the gods. The Ghost of Sparta's need for revenge will cause him to stop at nothing to seek the death of Zeus and the gods that have wronged him. In the process, Asmussen mentioned, Kratos' actions will re-ignite the old war between the Gods and the Titans, known in classic mythology as the Titanomachy. "Nothing is going to stand in his way – he's going to bring chaos and destruction, and if that means bringing down all of Olympus, so be it," Asmussen said.
The re-ignition of the war is the backdrop of God of War III and will constantly surround Kratos as he moves throughout the entire game. Asmussen pointed out that there would be moments when he might be fighting on the arms and shoulders of Gaia with other Titans next to him against hordes of soldiers. At other moments, he'd be handling a puzzle or exploring part of Olympus, while battles between gods and Titans would rage in the background. The effects from the battles of these divine beings will swirl and cross the land that Kratos will navigate, so the fog of war will be rocked with smoke, ash, fire, explosions and other debris from these conflicts. "The best way that I can describe it is take D-Day, the Battle at Normandy, combine it with the movie Cloverfield, and put Kratos smack dab in the middle of it," Asmussen said.
However, even with these images described to us, Asmussen specifically stated that these weren't the only elements of the story or the plot that players could expect. While he refused to go into any details on the plot, he did mention that he wanted to point out three elements related to the plot. First, he specifically wanted the story to bridge the entire series instead of being an isolated tale by itself. God of War III will be the final game in the series, and Asmussen pointed out that key moments from the first two games would have a major impact within the third game, turning the story into a title that's incredibly deep and complex. Obviously, this could cause problems for those players than never picked up the first two, but Asmussen stated that he wanted to make sure that the plot would be, "a refresher course for fans of the series, but a history lesson for any newcomers."
Secondly, the team wanted to get into the head of Kratos and fully show and depict what is making him tick at a particular moment. Apparently the team always wanted to show a violent physical struggle for Kratos but a violent emotional struggle, as well; these two elements will play out hand in hand within the fast-paced action of God of War III. Finally, the team wanted to have an epic finale to send the series out with a bang. Asmussen said that because the game will start very strong, it's going to end very strong, as well, and he feels that there will be a punch to the ending with a truth and relevance that will hit each person that picks up the controller and plays the game from start to finish.
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