This is the list of the soul realms that exist.
What is a Soul Realm?[]
The Soul Realms are ancient places that can enhance you. You can achieve that by completing certain goals, mainly by training. Those realms are actual realms from researched informations online, but most are altered names, so dont consider them real.
Not everyone is allowed to enter these realms. Specifically, entities that are too strong, as they may just pass trough all of them easily or even destroy them.
To do a realm (except the first one) you must complete all the ones that are previous to it. This will be important, as your newly gained power ups may help in the next realms.