Goreans in Second Life
There are hundreds, lands in Second Life sporting the Western medieval theme. (There are over 100 Gorean sims alone, as of 2008-09) In these sims, you'll find: kings and queens, knights and armors, princesses and dragons, slaves and servants, fairies and elves, sorcerers and witches, castles and fortresses …
- Tarnsman Gor by John Norman Buy at amazon
For more detail, see Wikipedia Master-slave morality, and Gorean Morality and Nietzsche By Luther At http://www.gor-now.net/delphius2002/id159.htm. In particular, the bottom half that paraphrases Nietzsche's writings.