* The House at the Edge of the World (2005)
* The Lost Library (2006)
* The Secret of the Sands (2007)
* The City of Gold (2008)
* The Island of Shadows (2009)
* The Mountain of Fire (2010)
* The Crystal Maze (2011)
* The Serpent King (2012)
* The Last Oracle (2013)
Short Stories:
* "The Last Oracle" (2011)
* "The Crystal Maze" (2012)
* "The Serpent King" (2013)
Non-Fiction:
* The History of the World (2014)
* The Geography of the World (2015)
* The Culture of the World (2016)
* The Science of the World (2017)
* The Philosophy of the World (2018)