| .dmo |
Cube 2: Sauerbraten Demo File |
| .dv2 |
Divinity 2 Data File |
| .dnf |
Duke Nukem Forever Map File |
| .dns |
Duke Nukem Forever Save File |
| .duc |
Action Replay Max DS Save File |
| .ds |
DAZ Studio 1/2 Script |
| .dm3 |
DigitalMicrograph Image |
| .dmb |
BYOND Game Executable |
| .dun |
Dungeon Defenders Saved Game File |
| .dat_new |
Minecraft World Level File |
| .dsg |
Doom Saved Game |
| .dxs |
Deus Ex Saved Game |
| .dsv |
DeSmuME Save File |
| .dwp |
DarkWave Studio Project File |
| .da2 |
Ad-Aware License File |
| .dz |
Dzip File |
| .dzip |
The Witcher 2 Game Archive |
| .ddb |
Digidesign Database |
| .desc |
Battlefield 2 Map Description File |
| .dad |
Data Abstract Driver file |
| .d3dbsp |
Call of Duty Map File |
| .dm_68 |
Quake 3 Demo File |
| .diva |
Project DIVA Song File |
| .d2s |
Diablo 2 Save File |