You could set it ten thousand years in the future, when a nomad alien race discovers earth. Most of the human race is extinct, but all their buildings (and cars
) are still there. The aliens are low on their own supplies, and low on manpower, so they need to quickly adapt to using human tools and resources. They also need to make peace with(or kill) the last remaining humans, who are naturally vary of the newcomers. Technology on earth hasn't evolved much since our time, since msot of our technology prior to this point was used to construct different weapons and war thingees.... The aliens are an adaptable race (RPG elements?) so they quickly catch up on human philosophy by reading old newspapers/books etc. Factions are made, some teaming up with the humans, some wanting to leave, etc., etc. Your character must choose wisely so that he can eventually... rule earth any way he sees fit!
Okay, I made that up as I went along. Good enough?
(Could I be a writer?
)
