| Amstrad CPC/PCW disk |  Suspect | 1984 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code |  Suspect - An Interactive Mystery Ver.14 | 1984 | Infocom, Inc. MA, USA 51051 |
| Apple II 5.25 disk | Suspect Model IM3-AP1 | 1984 | Infocom, Inc. MA, USA 51051 |
| Apple Macintosh disk | Suspect Model IM3-AP2 | 1984 | Infocom, Inc. MA, USA 51051 |
| Atari 400/800 disk | Suspect Model IM3-AT1 | 1984 | Infocom, Inc. MA, USA 51051 |
| Commodore C64 disk | Suspect Model IM3-CO1 | 1984 | Infocom, Inc. MA, USA 51051 |
| IBM PC 5.25in. disk | Suspect Model IM3-IB1 | 1984 | Infocom, Inc. MA, USA 51051 |
| Commodore C64 disk | Suspended | 1984 | Infocom, Inc. MA, USA 51051 |
| HP-150 soft. | Suspended | 1984 | Infocom, Inc. MA, USA 51051 |
| Commodore C64 disk |  The Four-In-One Infocom Sampler Model ID2-CO1 | 1984 | Infocom, Inc. MA, USA 51051 |
| Coleco Adam disk | The HitchHiker's Guide to the Galaxy | 1984 | Infocom, Inc. MA, USA 51051 |
| Amstrad CPC/PCW disk | The Hitchhiker's Guide to the Galaxy | 1984 | Infocom, Inc. MA, USA 51051 |
| Tatung Einstein disk | The Hitchhiker's Guide to the Galaxy | 1984 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | The Hitchhiker's Guide to the Galaxy SG Ver.31 | 1984 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | The Hitchhiker's Guide to the Galaxy Ver.42 | 1984 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | The Hitchhiker's Guide to the Galaxy Ver.47 | 1984 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | The Hitchhiker's Guide to the Galaxy Ver.56 | 1984 | Infocom, Inc. MA, USA 51051 |
| Apple II 5.25 disk | The Hitchhiker's Guide to the Galaxy Model IS4-AP1 | 1984 | Infocom, Inc. MA, USA 51051 |
| Apple Macintosh disk | The HitchHiker's Guide to the Galaxy Model IS4-AP2 | 1984 | Infocom, Inc. MA, USA 51051 |
| Atari 400/800 disk | The Hitchhiker's Guide to the Galaxy Model IS4-AT1 | 1984 | Infocom, Inc. MA, USA 51051 |
| Atari ST disk | The Hitchhiker's Guide to the Galaxy Model IS4-AT2 | 1984 | Infocom, Inc. MA, USA 51051 |
| Commodore C64 disk | The Hitchhiker's Guide to the Galaxy Model IS4-CO1 | 1984 | Infocom, Inc. MA, USA 51051 |
| IBM PC 5.25in. disk | The Hitchhiker's Guide to the Galaxy Model IS4-IB1 | 1984 | Infocom, Inc. MA, USA 51051 |
| IBM PC 5.25in. disk | The Hobbit | 1984 | Infocom, Inc. MA, USA 51051 |
| Apple Macintosh disk | The Witness Model IM2-AP2 | 1984 | Infocom, Inc. MA, USA 51051 |
| HP-150 soft. | Zork I | 1984 | Infocom, Inc. MA, USA 51051 |
| Amstrad CPC/PCW disk | Zork I - The Great Underground Empire | 1984 | Infocom, Inc. MA, USA 51051 |
| Enterprise 64 disk | Zork I - The Great Underground Empire | 1984 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | Zork I - The Great Underground Empire Ver.88 | 1984 | Infocom, Inc. MA, USA 51051 |
| Apple Macintosh disk | Zork I - The Great Underground Empire Model IZ1-AP2 | 1984 | Infocom, Inc. MA, USA 51051 |
| Kaypro disk | Zork I - The Great Underground Empire Model IZ1-KA1 | 1984 | Infocom, Inc. MA, USA 51051 |
| Apple II 5.25 disk | Zork I Demo - Catch A Butterfly | 1984 | Infocom, Inc. MA, USA 51051 |
| Enterprise 64 disk | Zork II - The Wizard of Frobozz | 1984 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | Zork II - The Wizard of Frobozz Ver.48 | 1984 | Infocom, Inc. MA, USA 51051 |
| Apple Macintosh disk | Zork II - The Wizard of Frobozz Model IZ2-AP2 | 1984 | Infocom, Inc. MA, USA 51051 |
| IBM PC 5.25in. disk | Zork II - The Wizard of Frobozz Model IZ2-IB2 | 1984 | Infocom, Inc. MA, USA 51051 |
| Enterprise 64 disk | Zork III - The Dungeon Master | 1984 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | Zork III - The Dungeon Master Ver.17 | 1984 | Infocom, Inc. MA, USA 51051 |
| Apple Macintosh disk | Zork III - The Dungeon Master Model IZ3-AP2 | 1984 | Infocom, Inc. MA, USA 51051 |
| IBM PC 5.25in. disk |  Zork III - The Dungeon Master Model IZ3-IB2 | 1984 | Infocom, Inc. MA, USA 51051 |
