This category should not be manually added to a page. It is added automatically to a page by adding Template:RealmBox to the realm's page.
If you're looking for Lost Realms, go to Category:Lost Realms.
This category has the following 3 subcategories, out of 3 total.
Pages in category "Realms"
The following 70 pages are in this category, out of 70 total.