Filmography
| Role | Title | Year | Character |
|---|---|---|---|
| Writer | Spirit - Der Wilde Mustang | 2002 | |
| Writer | Die Hütte - Ein Wochenende mit Gott | 2017 | |
| Writer | The Highwaymen | 2019 | |
| Writer | The Forbidden Kingdom | 2008 | |
| Writer | Marco Polo: One Hundred Eyes | 2015 | |
| Writer | Hidalgo - 3000 Meilen zum Ruhm | 2004 | |
| Writer | Crouching Tiger, Hidden Dragon: Sword of Destiny | 2016 | |
| Writer | Young Guns | 1988 | |
| Producer | Young Guns | 1988 | |
| Writer | Blaze of Glory - Flammender Ruhm | 1990 | |
| Producer | Blaze of Glory - Flammender Ruhm | 1990 | |
| Writer | Crossroads - Pakt mit dem Teufel | 1986 | |
| Writer | Halbblut | 1992 | |
| Producer | Halbblut | 1992 | |
| Writer | Nessie - Das Geheimnis von Loch Ness | 1996 | |
| Producer | The Babe - Ein amerikanischer Traum | 1992 | |
| Writer | The Babe - Ein amerikanischer Traum | 1992 | |
| Writer | Dreamkeeper | 2003 |