Gor (1968–2008)
- Priest-Kings of Gor (1968)
- Beasts of Gor (1978)
- Explorers of Gor (1979)
- Fighting Slave of Gor (1980)
- Guardsman of Gor (1981)
- Nomads of Gor (1981)
- Rogue of Gor (1981)
- Kajira of Gor (1983)
- Outlaw of Gor (1983)
- Dancer of Gor (1985)
- Raiders of Gor (1985)
- Vagabonds of Gor (1987)
- Savages of Gor (2007)
- Tribesmen of Gor (2007)
- Prize of Gor (2008)