1. Much content.
  2. Very research.
  3. So activities.
  4. Wow.

Past Duke: Lookin' good, pal!

Present Duke: Who the hell are you, my evil twin?

Past Duke: I'm you, genius, only back in time. Now hear me... Aliens have traveled into Earth's past to try and change history. I went back and fought them, but my time machine was destroyed, and I can no longer chase them through time. As result of their tampering, your time line will experience temporal disruptions! The military of your future should have time travel technology, but how you get there is your problem. But remember, if you don't go back in time and make things right, Earth's history will forever change, and mankind could be wiped out.

Present Duke: Well, so much for my vacation time.

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