- The Return of the Gods (The Return of the Gods) (1997)
- Gudenes hevn (The Revenge of the Gods) (2000)
- Gudenes opprør (The Rebellion of the Gods) (2003)
- Gudenes vrede (The Wrath of the Gods) (2006)
- Gudenes siste kamp (The Last Battle of the Gods) (2009)
- Arven etter gudene (The Legacy of the Gods) (2012)
- Gudenes fall (The Fall of the Gods) (2015)
Romaner:
- The Island of a Thousand Dead (The Island of a Thousand Dead) (2007)
- Gudenes forbannelse (The Curse of the Gods) (2011)
- Profetien om gudene (The Prophecy of the Gods) (2014)
- Gudenes hemmelighet (The Secret of the Gods) (2018)
Noveller:
- Nattens guder (Nattens guder) (2002)
- The Shadows of the Gods (The Shadows of the Gods) (2004)
- Gudenes drømmer (The Dreams of the Gods) (2008)
- The Legends of the Gods (The Legends of the Gods) (2010)
Essays og artikler:
- Myten om gudene (The Myth of the Gods) (1999)
- Gudenes religion (The Religion of the Gods) (2001)
- Gudenes kultur (The Culture of the Gods) (2005)
- The Story of the Gods (The History of the Gods) (2013)
Lydbøker:
- The Return of the Gods (The Return of the Gods) (2010)
- Gudenes hevn (The Revenge of the Gods) (2011)
- Gudenes opprør (The Rebellion of the Gods) (2012)
- Gudenes vrede (The Wrath of the Gods) (2013)
- Gudenes siste kamp (The Last Battle of the Gods) (2014)
- Arven etter gudene (The Legacy of the Gods) (2015)
- Gudenes fall (The Fall of the Gods) (2016)