* Krigen med nissene (2012)
* The Secret History of the Lizard People (2012)
* Invasjonen av kattefolket (2013)
* The Rise of the Zombie Dogs (2014)
* Vampyrenes retur (2015)
* The Last Stand of the Humans (2016)
* Verdenes krig (2017)
* Triffidenes dag (2018)
* The Invasion of the Body Snatchers (2019)
* Andromeda-stammen (2020)
Faktalitteratur:
* The Book of Lists:A Compendium of Curious Facts and Lists (2008)
* The Book of Lists:Volume 2 (2009)
* The Book of Lists:Volume 3 (2010)
* The Book of Lists:Volume 4 (2011)
* The Book of Lists:Volume 5 (2012)
* The Book of Lists:The Ultimate Edition (2013)
* The Book of Facts:Et kompendium med interessante og uvanlige fakta (2014)
* Faktaboken:bind 2 (2015)
* Faktaboken:bind 3 (2016)
* Faktaboken:bind 4 (2017)