| Devmack | Developer | |
| Devnari | Developer | |
| Devo | Developer | |
| Devoga | Developer | |
| Devolver Digital | DeveloperPublisher | |
| Devon | Developer | |
| Devon Wiersma | Developer | |
| Devora Studios | Developer | |
| Devria | Developer | |
| Devs in the Dark | Developer | |
| DevsLair Studio | Developer | |
| Devy_Games | Developer | |
| DewaOwl | Developer | |
| Dewilde Lucas | Developer | |
| Dewin | Developer | |
| Dexint | Developer | |
| Dexkill | Developer | |
| Dextell Ltd. | Publisher | |
| Dexter André Tofteland | Developer | |
| DexterZ | Developer | |
| Deybis Melendez | Developer | |
| Deylz | Developer | |
| Deynum | Developer | |
| Dez Climax | DeveloperPublisher | |
| DezBoyle | Developer | |
| Dezio95 | Developer | |
| Deztudio | Developer | |
| Dezue | Developer | |
| Dhrumil Surelia | Developer | |
| DiD | Developer | |
| DiP Interactive | Developer | |
| DiVeR | Developer | |
| DiaRa | Developer | |
| DiablaSoft | Developer | |
| Diabolic | Publisher | |
| Diabolic Software | Developer | |
| Diabolic Software (Carlos Doral Perez, German Salvador Garcia Cano, Mario de Luis Garcia) | Developer | |
| Diabolic Software (Carlos Doral Perez, Mario de Luis Garcia) | Developer | |
| Diabolic Software (Carlos Doral Perez, Mario de Luis Garcia, Max) | Developer | |
| Diabolic Software (German Salvador Garcia Cano, Mario de Luis Garcia) | Developer | |
| Diabolic Software (Gonzalo Martin Erro, Julio A. Martin Erro) | Developer | |
| Diabolical Mind | Developer | |
| DiabolicalMind | Developer | |
| Dialogue | Developer | |
| Dialogue Design | Developer | |
| Diamonax | Developer | |
| Diamond | Developer | |
| Diamond Head | Developer | |
| Diamond Software | Developer | |
| Diamond32 | Developer | |