Is it possible to move between the Worlds?
TriadCity is one World within a Multiverse of interconnected Worlds, each with unique challenges, personalities, and laws of physics.
It is possible to move between them. However there are consequences of which to be mindful. The Items you bring with you from TriadCity may have different capabilities or attributes in alien lands; your own level or personal attributes may change or have different meanings. Your TriadCity Roles and Skills may be useless, or not exist at all.
The most important difference is that in different Worlds death has contrasting consequences. In TriadCity, death is permanent. In Midgaard, death is inconvenient, but your character is "reincarnated" automatically with loss of exp. The laws of physics of the World you occupy at the moment of your death are the ones which apply.
Still. Explore! Just always be mindful of the consequences of journeys through the portals.