Is there a
God of War New Game Plus mode? The short answer is, unfortunately, a no. Upon beating the main story, you don't unlock a way to start the game with all or some of your items, skills, levels, and so on intact. This is rather unfortunate considering the fact there is a harder difficulty that upon selecting, you can't switch from it.
However, that isn't to say that without a
God of War New Game Plus mode, there is no longevity to the game. This is a surprisingly deep game with many places to explore and side quests and activities to complete. The main story alone can take dozens of hours to complete, and attempting to 100% the game and collect every trophy will extend that playtime by twice as much or more. So, you certainly get your bang for your buck.
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God of War New Game Plus: Is There a New Game Plus Mode? - GameRevolution