This BASIC-based system never received an official name, but it was used by both Trevor Toms himself and by his employer, Phipps Associates.
The system was originally published in the The ZX81 Pocket Book.
According to this interview with Sean Ellis, the Trevor Toms system was the primary inspiration for GAC.
| Title | Publisher | Year | Language | Documents |
|---|---|---|---|---|
| Ville Fantome, La | Les Aventures | 1984 | French | |
| Tombe du Pharaon, La | Les Aventures | 1984 | French | |
| Tablets of Hippocrates | Fawkes Computing | 1983 | English | Solution, Map |
| Stadt Alzan, Die | Hueber Software | 1983 | German | Solution, Map |
| Quete du Chevalier, La | Les Aventures | 1984 | French | |
| Pharaoh's Tomb, The | Phipps Associates |
1982 | English | Solution, Map |
| Montagne Magique, La | Les Aventures | 1984 | French | |
| Maison du professeur Folibus, La | Micro-Systèmes | 1982 | French | |
| Magic Mountain | Phipps Associates |
1982 | English | Solution, Map |
| Knight's Quest, The | Phipps Associates |
1983 | English | Solution, Map, Hints, Clue sheet |
| Greedy Gulch | Phipps Associates |
1982 | English | Solution, Map |
| Colditz | Phipps Associates |
1984 | English | Solution, Map, Hints |
| City of Alzan, The | Phipps Associates |
1981 | English | Solution, Map |
| Cauchemard House | ? | ? | French | Solution |