* The Dark Earth Saga (1987-i dag)
* The Winds of Fury (1987)
* The Gates of Hell (1989)
* The Throne of Chaos (1991)
* Maktens septer (1993)
* Rettferdighetens sverd (1996)
* The Shield of Faith (1998)
* The Lance of Destiny (2000)
* The Crown of Victory (2003)
* The Mark of the Beast (2005)
* The Last Battle (2008)
* The Chronicles of the Necromancer (1992–1994)
* The Summoning (1992)
* The Binding (1993)
* The Reckoning (1994)
Faktalitteratur:
* Warriors &Weapons:Fra steinalderen til i dag (1989)
* Slott og festninger:Fra middelalderen til renessansen (1990)
* Ships &Seafaring:From the Vikings to the Nuclear Age (1991)
* The History of Warfare (1993)
* The Book of War (1995)
* The Encyclopedia of Military History (1997)
* Knights &Chivalry (1998)
* Pirates &Buccaneers:From the Mediterranean to the Caribbean (1999)
* Vikings &Raiders (2000)
* The Mongols &the Great Khan (2001)
* Korsfarerne og det hellige land (2002)
* Hundreårskrigen (2004)
* The Wars of the Roses (2005)
* Romerrikets fall (2007)
* The Rise of the Islamic Empire (2009)
* Den første verdenskrig (2011)
* Den andre verdenskrig (2013)
Barnebøker:
* The Knight's Castle (1995)
* The Pirate Ship (1997)
* Vikingskipet (1999)
* Den antikke greske byen (2001)
* Den gamle egyptiske byen (2002)
* Middelalderlandsbyen (2003)
* The Renaissance City (2005)
* The Industrial Revolution City (2007)
* Den moderne byen (2010)