| MGT SAM Coupé disk |  Defenders of the Earth | 1990 | Enigma Variations |
| Amstrad CPC cass. |  Defenders of the Earth Model IB-A-016 | 1990 | System 4 de Espana, S.A. Spain |
| Sharp X68000 Series 5.25in. disk | Deg-on | 1990 | Pineapple Japan |
| Nintendo NES cart. | Deja Vu Model NES-DG-USA | 1990 | Kemco-Seika USA |
| NEC PC-Engine CD | Dekoboko Densetsu - Hashire Wagamanma Model TJCD0013 | 1990 | Telenet Japan |
| Sinclair ZX Spectrum cass. | Deliverance - Stormlord II | 1990 | Hewson Consultants, Ltd. England 012635 |
| Amstrad CPC cass. | Deliverance - Stormlord II | 1990 | Erbe Soft. Spain |
| Amstrad CPC 464 disk | Deliverance - Stormlord II | 1990 | Erbe Soft. Spain |
| Commodore C64 disk | Deliverance - Stormlord II | 1990 | Hewson Consultants, Ltd. England 012635 |
| Sharp X68000 Series 5.25in. disk | Delta Arm | 1990 | Login Soft. Japan |
| Sinclair ZX Spectrum cass. | Delta Charge! | 1990 | Thalamus |
| Amstrad CPC 464 disk | Demo 1 Hb | 1990 | IBC Iron Brains Crackers |
| Amstrad CPC 464 disk | Demo 2 Hb | 1990 | IBC Iron Brains Crackers |
| Nintendo NES cart. | Demon Sword - Release the Power Model NES-DO-USA | 1990 | Taito America Corp. Elk Grove Village, IL, USA |
| NEC PC-8801 Series disk | Denno Tsushin Vol. 1 | 1990 | Denno Kagaku Kenkujo |
| Fujitsu FM Towns CD | Dennou Ehon - Kyouryuu no Sekai | 1990 | Dennou Shoukai Japan |
| Sharp X68000 Series 5.25in. disk | Dennou Gakuen - Cybernetic Hi-School | 1990 | Gainax Japan |
| NEC PC-9801 Series 5.25in. disk | Dennou Gakuen - Cybernetic Hi-School | 1990 | Gainax Japan |
| MSX 2 disk | Dennou Gakuen - Cybernetic Hi-School | 1990 | Gainax Japan |
| NEC PC-8801 Series disk | Dennou Gakuen 3 - Top wo Nerae | 1990 | General Products Japan |
| MSX 2 disk | Dennou Gakuen 3 - Top wo Nerae! | 1990 | Gainax Japan |
| NEC PC-9801 Series 3.5in. disk | Dennou Gakuen 3 - Top wo Nerae! | 1990 | Gainax Japan |
| NEC PC-9801 Series 5.25in. disk | Dennou Gakuen 3 - Top wo Nerae! Model NHGX-14003 | 1990 | Gainax Japan |
| NEC PC-9801 Series 5.25in. disk | Dennou Shougi II - Eisei Meijin Model RA604 | 1990 | Konami Industry Co., Ltd. Japan |
| NEC PC-88 VA type-in | Denpaa no Madou-shi | 1990 | Dempa Shinbunsha Japan |
| Acorn BBC/Electron cass. | Depot Master Finsbury Park | 1990 | Greenup, Ashley |
| Acorn BBC/Electron cass. | Depot Master Old Oak Common | 1990 | Greenup, Ashley |
| Slot Machine | Derby Roulette | 1990 | Playmont |
| Amstrad CPC cass. | Desafio Total | 1990 | Erbe Soft. Spain |
| Apple IIc+ 3.5in. disk | Design Your Own Railroad | 1990 | Abracadata, Ltd. |
| Nintendo NES cart. | Destination Earthstar Model NES-VW-USA | 1990 | Acclaim Ent., Inc. Glen Cove, NY, USA |
| Sinclair ZX Spectrum cass. | Destiny Mission | 1990 | Williams Technology |
| Nintendo NES cart. | Destiny of an Emperor Model NES-YZ-USA | 1990 | Capcom USA, Inc. Santa Clara, CA, USA 13388 |
| Amstrad CPC 464 disk | Detective Enquete N.1 - L'Affaire Rostov Hb | 1990 | Unknown France |
| IGT Player's Edge Plus ROM kit | Deuces Joker Wild Poker Model PP0223 | 1990 | IGT International Game Technologies Reno, NV, USA |
| IGT Player's Edge Plus ROM kit | Deuces Wild Poker Model PP0190 | 1990 | IGT International Game Technologies Reno, NV, USA |
| IGT Player's Edge Plus ROM kit | Deuces Wild Poker Model PP0224 | 1990 | IGT International Game Technologies Reno, NV, USA |
| Amstrad CPC type-in | Deuteron | 1990 | DMV Daten und Medien Verlag Eschwege, Germany |
| Sharp X68000 Series 5.25in. disk | Devil Chain | 1990 | G-Limited |
| NEC PC-Engine HuCARD | Devil Crash - Naxat Pinball Model NX90004 | 1990 | Naxat Soft. Japan |
