| TRS-80 disk |  Zork III - The Dungeon Master Model IZ3-TR3 | 198? | Infocom, Inc. MA, USA 51051 |
| Atari ST disk | Zork III- The Dungeon Master Model IZ3-AT2 | 1983 | Infocom, Inc. MA, USA 51051 |
| Apple II 5.25 disk | Zork Quest I - Assault on Egreth Castle | 1988 | Infocom, Inc. MA, USA 51051 |
| Commodore C64 disk | Zork Quest I - Assault on Egreth Castle Model SZ1-CO1 | 1988 | Infocom, Inc. MA, USA 51051 |
| IBM PC 5.25in. disk | Zork Quest I - Assault on Egreth Castle Model SZ1-IB1 | 1988 | Infocom, Inc. MA, USA 51051 |
| IBM PC 5.25in. disk | Zork Quest II - The Crystal of Doom | 1989 | Infocom, Inc. MA, USA 51051 |
| Apple II 5.25 disk | Zork Quest II - The Crystal of Doom | 1988 | Infocom, Inc. MA, USA 51051 |
| Commodore C64 disk | Zork Quest II - The Crystal of Doom Model SZ2-CO1 | 1988 | Infocom, Inc. MA, USA 51051 |
| Apple II 5.25 disk | Zork Trilogy Model IT1-AP1 | 198? | Infocom, Inc. MA, USA 51051 |
| Apple Macintosh disk | Zork Trilogy Model IT1-AP2 | 198? | Infocom, Inc. MA, USA 51051 |
| Atari 400/800 disk | Zork Trilogy Model IT1-AT1 | 198? | Infocom, Inc. MA, USA 51051 |
| Atari ST disk | Zork Trilogy Model IT1-AT2 | 1986 | Infocom, Inc. MA, USA 51051 |
| Commodore C64 disk | Zork Trilogy Model IT1-CO1 | 198? | Infocom, Inc. MA, USA 51051 |
| Commodore Amiga 500 disk | Zork Trilogy Model IT1-CO4 | 1986 | Infocom, Inc. MA, USA 51051 |
| IBM PC 5.25in. disk | Zork Trilogy Model IT1-IB2 | 1986 | Infocom, Inc. MA, USA 51051 |
| IBM PC 5.25+3.5in. disk | Zork Zero | 1988 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code |  Zork Zero - The Revenge of Megaboz Ver.296 | 1988 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | Zork Zero - The Revenge of Megaboz Ver.366 | 1989 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | Zork Zero - The Revenge of Megaboz Ver.383 | 1989 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | Zork Zero - The Revenge of Megaboz Ver.393 | 1989 | Infocom, Inc. MA, USA 51051 |
| Apple II 5.25 disk | Zork Zero Model IZ9-AP1 | 1989 | Infocom, Inc. MA, USA 51051 |
| Apple Macintosh disk | Zork Zero Model IZ9-AP2 | 1988 | Infocom, Inc. MA, USA 51051 |
| Commodore Amiga 500 disk | Zork Zero Model IZ9-CO4 | 1989 | Infocom, Inc. MA, USA 51051 |
