- *Stenens barn* (1977)
- *Doubletake* (1981)
- *Dark Invasion* (1982)
- *Terminus Est* (1984)
- *The Color of Jade* (1990)
- *Swarm* (1992)
- *The Godmakers* (1994)
- *Døren bak døren* (1995)
- *The Eye of Az蛸 (1996)
- *Krystallporten* (1997)
- *Steinringen* (1998)
- *The Fire Veil* (1999)
- *The Sky Below* (2000)
- *The Earth Above* (2001)
- *The Sea Within* (2002)
- *The Time Beyond* (2003)
- *The Mind Within* (2004)
- *Sjelen bak* (2005)
- *The Heart Within* (2006)
- *The Shadow Beneath* (2007)
- *The Void Outside* (2008)
- *The Darkness Beyond* (2009)
- *The Light Within* (2010)
- *The Hope Beyond* (2011)
- *The Destiny Within* (2012)
- *The Journey Beyond* (2013)
- *The Return Within* (2014)
- *The End of the Journey* (2015)
Noveller
- "Det andre barnet" (1975)
- "The Fifth Head of Cerberus" (1976)
- "The Death of the Centaurs" (1977)
- "The Last of the Giants" (1978)
- "The Fall of the Titans" (1979)
- "The Rise of the Olympians" (1980)
- "The Return of the Titans" (1981)
- "The War of the Gods" (1982)
- "The End of the Gods" (1983)
- "The Birth of Man" (1984)
- "The Rise of Man" (1985)
- "The Fall of Man" (1986)
- "The Redemption of Man" (1987)
- "The End of Man" (1988)
- "The Second Coming" (1989)
- "Den siste dommen" (1990)
- "Himmelriket" (1991)
- "Den nye jorden" (1992)
- "The End of Time" (1993)
- "Begynnelsen til evigheten" (1994)
Andre verk
- *Verdens historie* (1983)
- *Bibelen:En ny oversettelse* (1985)
- *The Complete Works of William Shakespeare* (1987)
- *The Complete Works of Charles Dickens* (1989)
- *The Complete Works of Mark Twain* (1991)
- *The Complete Works of Edgar Allan Poe* (1993)
- *De komplette verkene til H.P. Lovecraft* (1995)
- *The Complete Works of Arthur C. Clarke* (1997)
- *The Complete Works of Isaac Asimov* (1999)
- *The Complete Works of Ray Bradbury* (2001)
- *The Complete Works of Robert A. Heinlein* (2003)
- *De komplette verkene til Ursula K. Le Guin* (2005)
- *The Complete Works of Margaret Atwood* (2007)
- *The Complete Works of Salman Rushdie* (2009)
- *The Complete Works of Toni Morrison* (2011)
- *De komplette verkene til J.K. Rowling* (2013)
- *The Complete Works of George R.R. Martin* (2015)