>>11180102>the world of Monster Hunter.Yeah, about that...the world of Monster Hunter is Earth, thousands of years in the future, according to the first game's artbook. Humans had become too technologically advanced and were waving war with each other using gene-boosted soldiers, monsters cloned from fossils and merged with various other animals' DNA, and weapons of mass destruction, and in the process they woke up Fatalis. Long story short, Fatalis basically hit the reset button on humanity, and while the few remaining humans retreated underground and lost all of their technology, Fatalis, the Elder Dragons, and the manmade chimeras took over the planet, with the chimeras interbreeding and eventually becoming the Large and Small monsters we know now.
As of the time if the first game, humans have only just started coming back into the world and forming small, primitive communities, with the descendants of the gene boosted soldiers becoming Hunters; the recurring theme of the games is mankind realizing they're not the top dog anymore and trying to find their place in this new world; humans have been out of the picture for so long at this point that they've been largely replaced by lizard people (who look like elves for some reason) called Wyverians who have taken it upon themselves to help rehabilitate mankind the same way modern humans help rehabilitate endangered species, and humans have only just recently rediscovered flight.
The point is, whatever incarnation of Prime that is, he'd have to be from the far, far future - one where the wildlife have reclaimed the planet and humans are only just barely hanging on by a thread. Maybe Earth just prior to BWII?