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