| Title | Publisher | Year | Language | Documents |
|---|---|---|---|---|
| Wonderland | Magnetic Scrolls |
1990 | English | Solution, Map |
| X-Bázis | Lavina | 1990 | Hungarian | Solution |
| Yawn | Scull PD |
1990 | English | Solution |
| Yawn, The | CP Verlag |
1990 | German | Solution, Map |
| Yukon Gold | Fast Access | 1990 | English | Solution |
| Zeitmaschine III, Die - Die Ausserirdischen | KE-Soft | 1990 | German | |
| Zillion | Sherston Software | 1990 | English |