- "The Searchers" (1960)
- The Big Game (1962)
- "The Battle of the Giants" (1964)
- "The Great Battle of the Apes" (1965)
- "Maa, jonka aika unohti" (1966)
- "The People That Time Forgot" (1967)
- Out of Time's Abyss (1968)
- "Beyond Time's End" (1969)
- "Castle Death" (1970)
- "King Cobra" (1971)
- "The Lost World" (1972)
- "Plague City" (1973)
- Tarzanin paluu (1974)
- "The Warlord of Mars" (1975)
- "Marsin prinsessa" (1976)
- John Carter ja Marsin jättiläinen (1977)
- "The Gods of Mars" (1978)
- "Thuvia, Maid of Mars" (1979)
- Tarnsman of Gor (1980)
- "Assassin of Gor" (1981)
- "Slave Girl of Gor" (1982)
- "Rogue of Gor" (1983)
- "Captive of Gor" (1984)
- "Raiders of Gor" (1985)
- "Fight for Gor" (1986)
- "Tribesmen of Gor" (1987)
- "Outlaw of Gor" (1988)
- "Savages of Gor" (1989)
- "Hunter of Gor" (1990)
- "Killer of Gor" (1991)
- "Destroyer of Gor" (1992)
- "Beast Master of Gor" (1993)
- "Slave Lord of Gor" (1994)
- "Valdor, Gorin valloittaja" (1995)
- "The Wizard King of Gor" (1996)
- "Caballus, the Horse Lord of Gor" (1997)
- "The Heirs of Gor" (1998)
- "Tarl Cabbot, Ruler of Gor" (1999)
- "Proomun herra" (2000)
- "Jääkuningas" (2001)
- "The Lost Legion" (2002)
- "The Iron Wolves of the North" (2003)
- "The Last of the Celts" (2004)
- "The Lion's Pride" (2005)
- "The Eagle's Flight" (2006)
- "The Wolf's Revenge" (2007)
- "The Bear's Fury" (2008)
- "The Dragon's Fire" (2009)
- "The Serpent's Shadow" (2010)
- "The Spider's Web" (2011)
- "The Scorpion's Sting" (2012)
- "Tiger's Claw" (2013)
- "The Shark's Teeth" (2014)
- "The Crocodile's Jaws" (2015)
- "The Elephant's Trunk" (2016)
- "The Hippo's Charge" (2017)
- "The Rhino's Horn" (2018)
- "The Buffalo's Stampede" (2019)
- "The Lion's Roar" (2020)
Novellit:
- "Kuolemanaamio" (1960)
- "The Temple of Terror" (1961)
- "The Eye of the Idol" (1962)
- "Muumion kirous" (1963)
- "Tsavon ihmissyöjät" (1964)
- "Lumien leopardi" (1965)
- "The White Death" (1966)
- "The Ghost Tiger" (1967)
- "The Giant Squid" (1968)
- "Loch Nessin hirviö" (1969)
- "The Abominable Snowman" (1970)
- "The Thunderbird" (1971)
- "The Quetzalcoatl" (1972)
- "Suuri käärme" (1973)
- "The Vampire Bat" (1974)
- Ihmissusi (1975)
- "The Zombie" (1976)
- "Muumio" (1977)
- "The Ghost" (1978)
- "Demoni" (1979)
- "The Witch" (1980)
- "The Wizard" (1981)
- "The Sorcerer" (1982)
- "The Necromancer" (1983)
- "The Warlock" (1984)
- "The Enchanter" (1985)
- "The Conjurer" (1986)
- "The Illusionist" (1987)
- "The Trickster" (1988)
- "The Jester" (1989)
- "The Fool" (1990)
- "The Knave" (1991)
- "The Knight" (1992)
- "The Rook" (1993)
- "Piispa" (1994)
- "Kuningatar" (1995)
- "Kuningas" (1996)
- "Keisari" (1997)
- "Keisarinna" (1998)
- "Paavi" (1999)
- "Kardinaali" (2000)
- "Piispa" (2001)
- "The Priest" (2002)
- "Diakoni" (2003)
- "Munkki" (2004)
- "Nunna" (2005)
- "The Saint" (2006)
- "Synner" (2007)
- "Paholainen" (2008)
- "The Heretic" (2009)
- Luopio (2010)
- "The Blasphemer" (2011)
- "Ateisti" (2012)
- "Agnostikko" (2013)
- "The Deist" (2014)
- "Panteisti" (2015)
- "Polyteisti" (2016)
- "Monoteisti" (2017)
- "The Henoteist" (2018)
- "The Animist" (2019)
- "Sintoist" (2020)