| Title | Publisher | Year | Language | Documents |
|---|---|---|---|---|
| Dames are Trouble | SoftDisk | 2003 | English | Solution, Hints |
| Dark Forest I | Paul Allen Panks |
2003 | English | |
| Dark Forest II | Paul Allen Panks |
2003 | English | |
| Dark Soul | Alexandre Owen Muñiz | 2003 | English | Solution, Map |
| Dead by Morning | Sam Kabo Ashwell | 2003 | English | |
| Dead Reckoning | Andrés Viedma Peláez, Nick Montfort |
2003 | English | Solution, Map |
| Deadventure | Dead Man, Max Adimirov | 2003 | Russian | |
| Dear Brian | Choices | 2003 | English | |
| Delvyn | William A. Tilli | 2003 | English | |
| Despair | ? | 2003 | English | Solution |
| Dios en Zapatillas | Jenesis | 2003 | Spanish | |
| Domicile | John Evans | 2003 | English | |
| Drakmagi | Johan Berntsson | 2003 | Swedish | |
| Droga Do Duplandu | ? | 2003 | Polish | |
| Droga do Duplandu | Hooy-Program | 2003 | Polish | |
| Dunkle Zeitalter | Andrea Weikert | 2003 | German | |
| Dyania | Paul Allen Panks |
2003 | English |