| Abbreviation | Definition |
|---|---|
| DCOG | Dreamcast Cross On-line Game |
| D-Dance | Dragon Dance |
| DDC | Drunk Drivers Club |
| DDD | Dragon, Dice, and Dungeons |
| DDK | Dooms Day Killer |
| DDM | Deadliest Death Match |
| DDT | Dark Dirigible Titan |
| DDW | Der Dragon Warrior |
| DEOI | Dark Edge of Insanity |
| DeSmuME | Dual Screen Emulator |
| DF | Dragon Force |
| DFA | Death Fom Above |
| DFBHD | Delta Force: Black Hawk Down |
| DFGT | Driving Force GT |
| DFLW | Delta Force: Land Warrior |
| DFO | Dungeon Fighter Online |
| DFUW | Delta Force: Urban Warfare |
| DG | Divergence gaming |
| DGC | Destiny Gamers Club |
| DGD | Dat Gaming Dude |