| Title | System | Year | |
|---|---|---|---|
| Abandonware Dos | The Fourth Protocol | PC | 1987 |
| The Commodore Zone | Fourth Protocol | C64 | 1985 |
| The Good Old Days | The Fourth Protocol | C64 | 1985 |
| XTC Abandonware | 4th Protocol | PC | 1985 |
| Title | Genre | Company | Year |
|---|---|---|---|
| Fourth Generation, The | unknown | Assistant Publishing | 1997 |