I, am a Traveller, that means I have a suped-up Vortex Manipulator that allows me to travel to Different Universes. You see, people assume that ours is the one and only Universe, but actually threre are Universes in number equivalent to the infinite-ness of each of the universes themselves. each Universe is conneted to the ones nearest to it, and people sometimes see into neighboring Universes and use that as inspiration for Books, T.V. shows, video games and the like. this is what happened when I fell into the Universe that housed Equestria.