| 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 |
| Infocom Z-Machine code | A Mind Forever Voyaging Ver.77 | 1985 | Infocom, Inc. MA, USA 51051 |
| Apple II 5.25 disk | A Mind Forever Voyaging Model IS5-AP1 | 1985 | Infocom, Inc. MA, USA 51051 |
| Apple Macintosh disk | A Mind Forever Voyaging Model IS5-AP2 | 1985 | Infocom, Inc. MA, USA 51051 |
| Atari ST disk | A Mind Forever Voyaging Model IS5-AT2 | 1985 | Infocom, Inc. MA, USA 51051 |
| Commodore C128 disk | A Mind Forever Voyaging Model IS5-CO5 | 1985 | Infocom, Inc. MA, USA 51051 |
| IBM PC 5.25in. disk | A Mind Forever Voyaging Model IS5-IB1 | 1985 | Infocom, Inc. MA, USA 51051 |
| Apple Macintosh disk | Ballyhoo Model IM4-AP2 | 1985 | Infocom, Inc. MA, USA 51051 |
| Commodore C64 disk | Ballyhoo Model IM4-CO1 | 1985 | Infocom, Inc. MA, USA 51051 |
| Apple Macintosh disk | Enchanter Model IZ4-AP2 | 1985 | Infocom, Inc. MA, USA 51051 |
| IBM PC 5.25in. disk | Fooblitzky | 1985 | Infocom, Inc. MA, USA 51051 |
| Apple II 5.25 disk | Fooblitzky Model GS1-AP1 | 1985 | Infocom, Inc. MA, USA 51051 |
| Atari 400/800 disk | Fooblitzky Model GS1-AT1 | 1985 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | Four-In-One Sampler I Ver.53 | 1985 | Infocom, Inc. MA, USA 51051 |
