| Title | Publisher | Year | Language | Documents |
|---|---|---|---|---|
| J. B. 007 | ? | ? | German | |
| Jadestatue, Die | Martin Oehm | 2003 | German | |
| Jagd auf den Atomgangster | ODS Electronics Hannover | 1990 | German | |
| Jäger der Heiligen Steine | Heiko Spies | 2021 | German | |
| Jazz Auf Tegemis | Jörg Rosenbauer | 2004 | German | |
| Jens und der Grill | Jens Bojaryn | 2004 | German | |
| Jenseits des alten Baums | Kai Roos | 2002 | German | |
| John Bend Detective | CA-Verlags, Commodore Disc, Commodore Welt | 1987 | German | Solution, Map |
| John Sinclair | ? | 1985 | German | Solution, Map |
| Josef Kong | ? | 2012 | German | |
| Judith | Volker Stepprath | ? | German |