Sometimes credited as Jon Thackray.
| Title | Publisher | Year | Language | Documents |
|---|---|---|---|---|
| Acheton | Acornsoft |
1978 | English | Solution, Map, Clue sheet |
| Avon | Topologika |
1982 | English | Solution, Map, Clue sheet |
| Hezarin | Topologika |
1981 | English | Solution, Map, Clue sheet |
| Spycatcher | Topologika |
1989 | English | Solution, Map, Clue sheet |