| Title | Publisher | Year | Language | Documents |
|---|---|---|---|---|
| 07 Zglos Sie | Kuba Rozpruwacz | ? | Polish | |
| 1893: A World's Fair Mystery | Peter Nepstad | 2003 | English | |
| 2030 Radio Killers | Lago Sistema | 1986 | Italian | |
| 221b Baker Street | Datasoft, IntelliCreations | 1986 | English | Solution |
| 2604 | Admiral Jota | 2001 | English | Solution, Map |
| 5. Kammer, Die | Tobias Heintzen | 2004 | German |