| Texas instrument TI-99/4A type-in |  Debarquement | 1984 | Shift Editions Paris, France |
| Colecovision cart. | Decathlon | 1984 | Activision, Inc. Mountain View, CA, USA 47875 |
| MSX cass. | Decathlon | 1984 | Activision, Inc. Mountain View, CA, USA 47875 |
| Dragon cass. | Decathlon | 1984 | Wizard Soft. |
| Atari 400/800 disk | Decathlon | 1984 | Activision, Inc. Mountain View, CA, USA 47875 |
| Spectravideo SV-318 cass. | Decathlon P | 1984 | Buggy Soft. |
| MSX cart. | Decathlon Model R48X5506 | 1984 | Pony Canyon, Inc. Japan |
| Sinclair ZX Spectrum cass. | Decor Wreckers | 1984 | Scorpio Soft. |
| Texas instrument TI-99/4A type-in | Dedale | 1984 | Shift Editions Paris, France |
| Sinclair ZX Spectrum cass. | Deep Space | 1984 | PSS Personal Soft. Services 012484 |
| National JR-100 type-in | Deepgon | 1984 | Dempa Shinbunsha Japan |
| Commodore C64 disk | Defend | 1984 | Argus Press Soft., Ltd. UK |
| Sinclair ZX Spectrum cass. | Defenda | 1984 | Interstella Soft. |
| Sinclair ZX Spectrum cass. | Defendar | 1984 | Mikro-Gen UK |
| Microtan 65 soft. | Defender | 1984 | Macdonald, Geoff |
| Texas instrument TI-99/4A type-in | Defender | 1984 | Shift Editions Paris, France |
| Commodore VIC-20 type-in | Defender | 1984 | Argus Specialist Publications |
| Tabletop game | Defender Model 784 | 1984 | Rollet S.A. France |
| Dedicated Console | Defendo Model 90-0187 | 1984 | VTECH Video Technology, Ltd. |
| Commodore VIC-20 type-in | Defense | 1984 | Duckworth Home Computing |
| Hitachi MB-6880 (BM-LII) type-in | Defense Satellite | 1984 | Dempa Shinbunsha Japan |
| Canon X-07 type-in | Defenseur | 1984 | Shift Editions Paris, France |
| Texas instrument TI-99/4A type-in | Defensive | 1984 | Shift Editions Paris, France |
| Thomson MO5 cass. | Defi | 1984 | CNDP Centre National de Documentation Pedagogique France |
| Sinclair ZX Spectrum type-in | DefiMath | 1984 | Shift Editions Paris, France |
| Commodore VIC-20 type-in | Deflexor | 1984 | Argus Specialist Publications |
| Thomson TO7 type-in | Delos Attaque | 1984 | Shift Editions Paris, France |
| Fujitsu FM-8 cass. | Delphis Model CD-1135 | 1984 | Compac Japan |
| Hitachi MB-S1 cass. | Delphis Model MA-3207A | 1984 | Compac Japan |
| Camputers Lynx disk | Delta Wing | 1984 | Creative Sparks |
| Sinclair ZX Spectrum cass. | Delta Wing Model TNCC191 | 1984 | Creative Sparks |
| NEC PC-9801 Series type-in | Deltizon | 1984 | Dempa Shinbunsha Japan |
| Sinclair ZX Spectrum cass. | Demolition | 1984 | Dorling Kindersley |
| TRS-80 CoCo cart. | Demolition Derby | 1984 | Tandy Corp. |
| Dragon cass. | Demolition Derby | 1984 | Microdeal |
| Commodore C64 type-in | Demolition Derby | 1984 | Interface Publications |
| Arcade Video game | Demolition Derby Model 0A48 | 1984 | Bally Midway Mfg. Co. Franklin Park, IL, USA |
| Arcade Video game | Demolition Derby Model 0A59 | 1984 | Bally Midway Mfg. Co. Franklin Park, IL, USA |
| Arcade Video game kit | Demolition Derby Model 0C48 | 1984 | Bally Midway Mfg. Co. Franklin Park, IL, USA |
| TRS-80 CoCo cart. | Demon Attack | 1984 | Tandy Corp. |
