For several years, people have been being randomly plucked from their lives and thrown into other realities and worlds, creating chaos and mayhem throughout the multiverse. People thought to be characters from movies or books in one reality pop up as real people in another. Nobody in any of the realities had been able to figure out WHY or HOW this was happening, only that it was.
However, in one reality.... the CAUSE at least has been found.
In the world known to us as Marvel-616, scientist/superheroes Reed Richards and Hank McCoy, along with Latverian dictator Victor Von Doom, brought together by a common fear that these events were tearing the threads of reality to pieces, combined their efforts and realized that this was being brought about by the combining of the infamous Reality Gem in two separate realities.
With no current theories on how to stop this from happening, the most the three could think of was to leave the gem in possession of someone who could keep it moving constantly, to help keep it out of the hands of The Mad Titan Thanos, who could use the now-unstable gem to finally end everything.
With the blessing of SHIELD and The Avengers, the gem was given to sometimes-teammate Peter "Star-Lord" Quill and his Guardians of the Galaxy, who kept it onboard their travelling space station called Knowhere, which Tony Stark has now helped build on and make more inhabitable to accommodate all the people being transported to and from this reality via the Reality Gem.
Recently, with the number of reality-hopping refugees growing larger and larger, the rulers of the planet Galador, which had lost a large percent of it's population in war, gave their blessing for the refugees to make their home on one of the more sparcely occupied continents, where they've crafted exact replicas of some of the cities and landmarks from the refugees' various realities.
"Freedomtown" is a panfandom RPG taking place in the Marvel 616 universe. All characters NOT from the present-day 616 universe will arrive on Galador after being engulfed by a flash of light and then appearing on the ground in the middle of the park in Freedomtown, the main refugee city on Galador (also where the reality gem is being stored and guarded). Characters will be allowed to leave the world in various starships if requested, but must return. There will also be various small plots, which you may take part in only if you wish.