| Title | Publisher | Year | Language | Documents |
|---|---|---|---|---|
| Mazemapper | Bob Reeves | 1999 | English | Solution, Map |
| Mean Story, The | Bob Reeves | 1999 | English | Solution, Map |
| Mimoso Adventure, The | Fan | 1999 | Spanish | |
| Mine, The | J & F Publishing, Loadstar | 1999 | English | |
| Moment of Hope, A | Simmon Keith Barney | 1999 | English | |
| Mulldoon Legacy, The | Jon Ingold | 1999 | English | Map, Hints |
| Museum of TADS | Kevin Forchione | 1999 | English | |
| Music Education | Bill Linney | 1999 | English | |
| Mysterious Island | Druid Software | 1999 | Russian |