* _Don't Die My Brother_ (1978)
* _Min mors spøkelse_ (1995)
* _Under afrikansk himmel_ (1997)
* _An African's Tale_ (2002)
* _Den hemmelige sønn_ (2002)
* _Den nakne sannheten_ (2002)
* _Den siste reisen_ (2002)
* _Slavebarnet_ (2002)
* _Slavepiken_ (2002)
* _Slavekrigeren_ (2002)
* _Slavekvinnen_ (2002)
* _Slavehandleren_ (2002)
* _Slavekrigene_ (2002)
* _Den siste slaven_ (2002)
* _Slaveprinsen_ (2002)
* _Slavekongen_ (2002)
* _Slavedronningen_ (2002)
* _Slaveimperiet_ (2002)
* _Slaveverdenen_ (2002)
* _Slaveuniverset_ (2002)
* Noveller:
* "The Night of Madness" (1979)
* "Det hemmelige rommet" (1980)
* "The Talking Skull" (1981)
* "The Magic Potion" (1982)
* "Den usynlige mannen" (1983)
* "The Flying Carpet" (1984)
* "Den magiske lampen" (1985)
* "Verdens syv underverk" (1986)
* "Alvenes hemmelige verden" (1987)
* "Dvergenes rike" (1988)
* "The Empire of the Orcs" (1989)
* "The Land of the Giants" (1990)
* "The Island of the Amazons" (1991)
* "The City of Atlantis" (1992)
* "The Lost World of Mu" (1993)
* "The Continent of Lemuria" (1994)
* Barnebøker:
* _The Adventures of Akpan and Orok_ (1985)
* _The Adventures of Akanim and Iquo_ (1986)
* _The Adventures of Mfon and Ekaette_ (1987)
* _The Adventures of Uduak and Eno_ (1988)
* _Eventyrene til Ette og Iniobong_ (1989)
* _The Adventures of Ekong and Adiaha_ (1990)
* _The Adventures of Asuquo and Ilabong_ (1991)
* _The Adventures of Orok and Enobong_ (1992)
* _Etuk og Akons eventyr_ (1993)
* _Effiong og Arits eventyr_ (1994)