| title | ISBN-13 | year of publication | |
|---|---|---|---|
| Der Zauber der geheimen Stadt | 978-3-401-05393-6 | 2003 | |
| Ice Angel | 978-0-340-89418-7 | 2011 | |
| Otto and the Bird Charmers | 978-0-340-87846-0 | 2004 | |
| Otto and the Flying Twins | 978-0-340-85476-1 | 2003 | |
| Otto i latajace blizniaczki | 978-83-241-1927-1 | ||
| Otto in the Time of the Warrior | 978-0-340-89417-0 | 2006 | |
| Robot Nine - Buyuk Kurtarma Operasyonu | 978-9944-82-824-6 | 2014 | |
| Robot Nine - Macera Basliyor | 978-9944-82-825-3 | 2014 |
Amber · Arena · Hodder & Stoughton