There is a classification for each of the worlds

they are devised on the fantasy powers to affect the world or even the multiverses... and this is to you all to give some tips or suggestions of where he could go, leave them in

< > = system talking or notification

HERE.

Rankings and description of their power level:

[Class 0]

The power of the actual time and World we mere mortals know. (If the world is focused on a high-tech basis, is here too)

[Class 1]

This is where we start to have some fun, a world where we had some low energy that can improve the human body, and can not be projected to the external and visible form, but can be used to influence other people.

[Class 2]

This is the same as the "[type 1]" but with mythical creatures and beasts of any kind, but not enough to destroy the normal lifestyle that we humans know.

[Class 3]

this is where normal fantasy worlds are, they had magic, ki, or any type of energy but they only can affect the world that they are when in the apex of the same.

[Class 4]

That class starts with the soul and get to the Soulforce and soul world and keeps the destruction levels

[Class 5]

the level of change that can bring to the World is wider and can affect galaxies

[Class 6]

Starts having lesser gods and beliefs is a strong energy that modifies the universe and its the peak of the universe

[Class 7]

here is where the multiverse powerhouses are and rule.

[Class 8]

Here is where the heavenly, mystic, ethereal, and elevated beings and where the high tech and mystic power are equivalent to each other in accomplishment