| Hitachi MB-6890 (BM-LIII) type-in |  Devil Soldier | 1984 | Dempa Shinbunsha Japan |
| Nintendo Famicom cart. | Devil World Model HVC-DD | 1984 | Nintendo Co., Ltd. Japan |
| Texas instrument TI-99/4A type-in | Devil's Dungeon P | 1984 | Hayden Book Co. |
| Thomson MO5 cass. | Devin | 1984 | CNDP Centre National de Documentation Pedagogique France |
| NEC PC-9801 Series 5.25in. disk | Dezeni Land | 1984 | Hudson Soft. Hudson Group Japan |
| MSX cass. | Dezeni Land Model MX-2003 | 1984 | Hudson Soft. Hudson Group Japan |
| Sharp MZ-1500 Quick disk | Dezeni Land Model QD-1003 | 1984 | Hudson Soft. Hudson Group Japan |
| NEC PC-6601 Series disk | Dezeni Land Model S3-2003 | 1984 | Hudson Soft. Hudson Group Japan |
| Sinclair ZX Spectrum type-in | Dédale | 1984 | Shift Editions Paris, France |
| Coleco Adam disk | Diablo | 1984 | Image MicroCorp |
| Sinclair ZX Spectrum cass. | Diablo King | 1984 | Cibercomp S.A. Spain |
| Sharp PC-1211 type-in | Diabolic | 1984 | Shift Editions Paris, France |
| Commodore C64 type-in | Diagonalle | 1984 | Guild Publishing |
| Alice 32 cass. | Dialogue avec une Sauterelle Model 4M 0005 | 1984 | VIFI-Nathan Vifi International |
| Thomson TO7 type-in | Diamant | 1984 | Shift Editions Paris, France |
| Thomson TO7 cass. | Diamants | 1984 | Shift Editions Paris, France |
| Sharp MZ-1500 Quick disk | Diamond Chase | 1984 | OAK Japan |
| Sinclair ZX Spectrum cass. | Diamond Quest | 1984 | CCS Cases Computer Simulations, Ltd. London, England |
| NEC PC-6001 type-in | Diamond River | 1984 | Dempa Shinbunsha Japan |
| Commodore C64 type-in | Diamond Thief | 1984 | Hayden Book Co. |
| Atari 400/800 disk | Dianes | 1984 | English Soft. |
| National JR-800 type-in | Dice 10 | 1984 | Dempa Shinbunsha Japan |
| Commodore C64 type-in | Dice Racers | 1984 | HPBooks |
| Sinclair ZX Spectrum cass. | Dickie Diver | 1984 | Quickbeam Soft. |
| Handheld game | Difesa Model VG95 | 1984 | Polistil Italy |
| MSX cass. | Dig Dug | 1984 | Bug-Byte London, England |
| IBM PC 5.25in. disk |  Dig Dug Model 14354 P | 1984 | Datasoft, Inc. Chatsworth, CA, USA |
| Atari 800/C64 disk | Dig Dug Model 14356 P | 1984 | Datasoft, Inc. Chatsworth, CA, USA |
| Colecovision cart. | Dig Dug Model 70012 P | 1984 | Atarisoft Atari, Inc. |
| Sharp MZ-1500 Quick disk | Dig Dug Model DP-3201201 | 1984 | Dempa Shinbunsha Japan |
| Fujitsu FM-7 cass. | Dig Dug Model DP-3301143 | 1984 | Dempa Shinbunsha Japan |
| MSX cart. | Dig Dug Model DP-3912009 | 1984 | Dempa Shinbunsha Japan |
| Acorn BBC/Electron cass. | Digger | 1984 | Visions Soft. Factory |
| Camputers Lynx cass. | Diggerman | 1984 | Gem Soft. |
| Handheld game | Digi Casse Model 0200051 | 1984 | Bandai Co., Ltd. Japan |
| Handheld game | Digi Casse Model 0200052 | 1984 | Bandai Co., Ltd. Japan |
| Watch game | Digital Invader Game Model CA-503 | 1984 | Casio Computer Co., Ltd. |
| Commodore C64 type-in | Digits | 1984 | Datamost, Inc. |
| Hitachi MB-6880 (BM-LII) type-in | Dimension Wars | 1984 | Dempa Shinbunsha Japan |
| Atari 400/800 disk | Dimension X | 1984 | Synapse Soft. Corp. |
