This covers a number of classic mainframe systems, such as PDP-11, DEC-20 and VAX-11.
| Title | Company | Year | Language | Documents |
|---|---|---|---|---|
| Acheton | Topologika, Acornsoft | 1978 | English | Solution, Map |
| Avon | Topologika | 1989 | English | Solution |
| Colossal Cave Adventure | Will Crowther, Don Woods | 1976 | English | |
| Crobe | Jonathan Partington | 1986 | English | |
| Crystal Cave | ? | ? | English | |
| Enchanter | Infocom |
1983 | English | Solution, SLAG hints |
| Fyleet | Jonathan Partington | 1985 | English | |
| Haunt | John Laird | 1979 | English | |
| Infidel | Infocom |
1983 | English | Solution |
| Kingdom of Hamil | Topologika, Acornsoft | 1988 | English | Solution, Hints |
| Mystery Mansion | ? | 1977 | English | |
| Planetfall | Infocom |
1983 | English | Solution, Hints, SLAG hints |
| Quest for the Sangraal | Jonathan Partington | 1987 | English | Map, Hints |
| Sorcerer | Infocom |
1984 | English | Solution, SLAG hints |
| Starcross | Infocom |
1982 | English | Solution, SLAG hints |
| Stuga | Olle E. Johansson, Kimmo Eriksson, Viggo Eriksson | 1978 | Swedish | SLAG hints |
| Xeno | Jonathan Mestel | ? | English | |
| Zork | ? | 1977 | English | |
| Zork I: The Great Underground Empire | Infocom |
1980 | English | Solution, SLAG hints |