| Code | Title | Description | Setting in Mystara | Cover |
| Year 1981 | Dungeones & Dragons Expert Set | Rules Supplement | Explicit |
|
| Year 1983 | Dungeones & Dragons Expert Rules Set 2 | Rules Supplement | Explicit |
|
| X1 | The Isle of Dread (blue) | Adventure | Explicit | |
| X1 | The Isle of Dread (red) | Adventure | Explicit | |
| X2 | Castle Amber(Chateau d'Amberville) | Adventure | Explicit | |
| X3 | Curse of Xanathon | Adventure | Explicit | |
| X4 | Master of the Desert Nomads | Adventure | Explicit | |
| X5 | Temple of Death | Adventure | Explicit | |
| X6 | Quagmire! | Adventure | Explicit | |
| X7 | The War Rafts of Kron | Adventure | Explicit | |
| X8 | Drums on Fire Mountain | Adventure | Explicit | |
| X9 | The Savage Coast | Adventure | Explicit | |
| X10 | Red Arrow, Black Shield | Adventure | Explicit | |
| X11 | Saga of the Shadow Lord | Adventure | Explicit | |
| X12 | Skarda's Mirror | Adventure | Explicit | |
| X13 | Crown of Ancient Glory | Adventure | Explicit | |
| XL1 | Quest for the Heartstone | Adventure | Implicit | |
| XSOLO | Lathan's Gold | Adventure | Explicit | |
| XS2 | Thunderdelve Mountain | Adventure | Implicit | |