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While the Trilogy ends with World War II, the first entry, Critical Mass, begins with Duke in the future. The second title, Chain Reaction, puts Sir Nukem in the present day. It's not until the last game, Proving Grounds, that the action hero proves his worth in the Second Great War.

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Though the Nintendo DS and PSP releases will both use 3D graphics and share a common storyline, each version will deliver different gameplay scenarios keyed to the platform's strengths and the Duke Nukem heritage.