| Atari ST disk |  Leather Goddesses of Phobos Model IC1-AT2 | 198? | Infocom, Inc. MA, USA 51051 |
| Commodore C64 disk | Leather Goddesses of Phobos Model IC1-CO1 | 1986 | Infocom, Inc. MA, USA 51051 |
| Commodore Amiga 500 disk | Leather Goddesses of Phobos Model IC1-CO4 | 198? | Infocom, Inc. MA, USA 51051 |
| IBM PC 5.25in. disk |  Leather Goddesses of Phobos Model IC1-IB1 | 1988 | Infocom, Inc. MA, USA 51051 |
| IBM PC 5.25in. disk | Leather Goddesses of Phobos Model IC1-IB2 | 1986 | Infocom, Inc. MA, USA 51051 |
| Apple II 5.25 disk | Mines of Titan | 1989 | Infocom, Inc. MA, USA 51051 |
| IBM PC 5.25+3.5in. disk | Mines of Titan | 1989 | Infocom, Inc. MA, USA 51051 |
| Apple II 5.25 disk | Mini Zork I - The Great Underground Empire | 1987 | Infocom, Inc. MA, USA 51051 |
| Commodore C64 cass. | Mini-Zork I - The Great Underground Empire | 1988 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code |  Mini-Zork I - The Great Underground Empire Ver.34 | 1988 | Infocom, Inc. MA, USA 51051 |
| Amstrad CPC/PCW disk | Moonmist | 1986 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | Moonmist Ver.4 | 1986 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | Moonmist Ver.9 | 1986 | Infocom, Inc. MA, USA 51051 |
| Apple II 5.25 disk | Moonmist Model IM5-AP1 | 1986 | Infocom, Inc. MA, USA 51051 |
| Apple Macintosh disk | Moonmist Model IM5-AP2 | 1986 | Infocom, Inc. MA, USA 51051 |
| Atari 400/800 disk | Moonmist Model IM5-AT1 | 1986 | Infocom, Inc. MA, USA 51051 |
| Atari ST disk | Moonmist Model IM5-AT2 | 1986 | Infocom, Inc. MA, USA 51051 |
| Commodore C64 disk | Moonmist Model IM5-CO1 | 1986 | Infocom, Inc. MA, USA 51051 |
| Commodore Amiga 500 disk | Moonmist Model IM5-CO4 | 1986 | Infocom, Inc. MA, USA 51051 |
| IBM PC 5.25in. disk | Moonmist Model IM5-IB2 | 1986 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | Nord and Bert Couldn't Make Head or Tail of It Ver.19 | 1987 | Infocom, Inc. MA, USA 51051 |
| Apple II 5.25 disk | Nord and Bert Couldn't Make Head or Tail of It Model IC3-AP1 | 1987 | Infocom, Inc. MA, USA 51051 |
| Apple Macintosh disk | Nord and Bert Couldn't Make Head or Tail of It Model IC3-AP2 | 1987 | Infocom, Inc. MA, USA 51051 |
| Atari ST disk | Nord and Bert Couldn't Make Head or Tail of It Model IC3-AT2 | 1987 | Infocom, Inc. MA, USA 51051 |
| Commodore C64 disk | Nord and Bert Couldn't Make Head or Tail of It Model IC3-CO1 | 1987 | Infocom, Inc. MA, USA 51051 |
| Commodore Amiga 500 disk | Nord and Bert Couldn't Make Head or Tail of It Model IC3-CO4 | 1987 | Infocom, Inc. MA, USA 51051 |
| IBM PC 5.25in. disk | Nord and Bert Couldn't Make Head or Tail of It Model IC3-IB1 | 1987 | Infocom, Inc. MA, USA 51051 |
| Coleco Adam disk | Planetfall | 1983 | Infocom, Inc. MA, USA 51051 |
| Amstrad CPC/PCW disk | Planetfall | 1983 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | Planetfall SG Ver.10 | 1988 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | Planetfall Ver.10 | 1988 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | Planetfall Ver.20 | 1983 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | Planetfall Ver.26 | 1983 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | Planetfall Ver.29 | 1983 | Infocom, Inc. MA, USA 51051 |
| Infocom Z-Machine code | Planetfall Ver.37 | 1983 | Infocom, Inc. MA, USA 51051 |
| ACT Apricot PC Xi disk | Planetfall Model IS3-AC1 | 198? | Infocom, Inc. MA, USA 51051 |
| Apple II 5.25 disk | Planetfall Model IS3-AP1 | 1983 | Infocom, Inc. MA, USA 51051 |
| Apple Macintosh disk | Planetfall Model IS3-AP2 | 1984 | Infocom, Inc. MA, USA 51051 |
| Atari 400/800 disk | Planetfall Model IS3-AT1 | 1983 | Infocom, Inc. MA, USA 51051 |
| Atari ST disk | Planetfall Model IS3-AT2 | 198? | Infocom, Inc. MA, USA 51051 |
