| TRS-80 disk |  Suspended Model IS2-TR3 | 1983 | Infocom, Inc. MA, USA 51051 |
| Amstrad CPC/PCW disk | The Witness | 1983 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code |  The Witness - An Interlogic Mystery Ver.13 | 1983 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | The Witness - An Interlogic Mystery Ver.18 | 1983 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | The Witness - An Interlogic Mystery Ver.20 | 1983 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | The Witness - An Interlogic Mystery Ver.21 | 1983 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | The Witness - An Interlogic Mystery Ver.22 | 1983 | Infocom, Inc. MA, USA 51051 |
| Apple II 5.25 disk | The Witness Model IM2-AP1 | 1983 | Infocom, Inc. MA, USA 51051 |
| Atari 400/800 disk | The Witness Model IM2-AT1 | 1983 | Infocom, Inc. MA, USA 51051 |
| Commodore C64 disk | The Witness Model IM2-CO1 | 1983 | Infocom, Inc. MA, USA 51051 |
| IBM PC 5.25in. disk | The Witness Model IM2-IB2 | 1983 | Infocom, Inc. MA, USA 51051 |
| Coleco Adam disk | Witness | 1983 | Infocom, Inc. MA, USA 51051 |
| Coleco Adam disk | Zork I - The Great Underground Empire | 1983 | Infocom, Inc. MA, USA 51051 |
| Commodore C64 disk | Zork I - The Great Underground Empire | 1983 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | Zork I - The Great Underground Empire Ver.75 | 1983 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | Zork I - The Great Underground Empire Ver.76 | 1983 | Infocom, Inc. MA, USA 51051 |
| Coleco Adam disk | Zork II - The Wizard of Frobozz | 1983 | Infocom, Inc. MA, USA 51051 |
| Amstrad CPC/PCW disk | Zork II - The Wizard Of Frobozz | 1983 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | Zork II - The Wizard of Frobozz Ver.22 | 1983 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | Zork II - The Wizard of Frobozz Ver.23 | 1983 | Infocom, Inc. MA, USA 51051 |
| Atari ST disk | Zork II- The Wizard of Frobozz Model IZ2-AT2 | 1983 | Infocom, Inc. MA, USA 51051 |
| Coleco Adam disk | Zork III - The Dungeon Master | 1983 | Infocom, Inc. MA, USA 51051 |
| Amstrad CPC/PCW disk | Zork III - The Dungeon Master | 1983 | Infocom, Inc. MA, USA 51051 |
| Commodore C64 disk | Zork III - The Dungeon Master | 1983 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | Zork III - The Dungeon Master Ver.15 | 1983 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | Zork III - The Dungeon Master Ver.16 | 1983 | Infocom, Inc. MA, USA 51051 |
| Atari ST disk | Zork III- The Dungeon Master Model IZ3-AT2 | 1983 | Infocom, Inc. MA, USA 51051 |
| Coleco Adam disk | Cutthroats | 1984 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | Cutthroats Ver.23 | 1984 | Infocom, Inc. MA, USA 51051 |
| Apple II 5.25 disk | Cutthroats Model IA3-AP1 | 1984 | Infocom, Inc. MA, USA 51051 |
| Apple Macintosh disk | Cutthroats Model IA3-AP2 | 1984 | Infocom, Inc. MA, USA 51051 |
| Atari 400/800 disk | Cutthroats Model IA3-AT1 | 1984 | Infocom, Inc. MA, USA 51051 |
| Commodore C64 disk | Cutthroats Model IA3-CO1 | 1984 | Infocom, Inc. MA, USA 51051 |
| IBM PC 5.25in. disk | Cutthroats Model IA3-IB1 | 1984 | Infocom, Inc. MA, USA 51051 |
| Amstrad CPC/PCW disk | Cutthroats Model UQD-IA3 | 1984 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | Enchanter Ver.24 | 1984 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | Four-In-One Sampler I Ver.26 | 1984 | Infocom, Inc. MA, USA 51051 |
| Atari 400/800 disk |  Four-in-One Sampler Model ID2-AT1 | 1984 | Infocom, Inc. MA, USA 51051 |
| Apple Macintosh disk | Infidel Model IA1-AP2 | 1984 | Infocom, Inc. MA, USA 51051 |
| IBM PC 5.25in. disk | Infidel Model IA1-IB1 | 1984 | Infocom, Inc. MA, USA 51051 |
