| Amstrad CPC 464 disk |  Cyberball Model AMD 218 | 1990 | Erbe Soft. Spain |
| Amstrad CPC cass. | Cyberbig Model AMC 729 | 1990 | MCM Soft. Spain |
| Amstrad CPC 464 disk | Cyberbig Model AMF 729 | 1990 | MCM Soft. Spain |
| Amstrad CPC 464 disk | Cyborgs Hb | 1990 | Elmsoft Game-Service |
| Arcade Video game |  Cyclotron | 1990 | Atari Games Corp. CA, USA |
| NEC PC-9801 Series 5.25in. disk | D - Oushuu Shinkirou | 1990 | Wolf Team Japan |
| NEC PC-9801 Series 3.5in. disk | D - Oushuu Shinkirou | 1990 | Wolf Team Japan |
| Casio PB-100 type-in | D&A | 1990 | Dempa Shinbunsha Japan |
| Sharp X68000 Series 5.25in. disk | D-Again - The 4th Unit 5 | 1990 | Data West, Inc. Japan |
| NEC PC-9801 Series 5.25in. disk | D-Again - The 4th Unit 5 | 1990 | Data West, Inc. Japan |
| Fujitsu FM Towns CD | D-Again - The 4th Unit 5 | 1990 | Data West Corp. Japan |
| Fujitsu FM Towns CD |  D-Again - The 4th Unit 5 Taikenban | 1990 | Data West Corp. Japan |
| MSX 2 type-in | D-E-N-G-E-K-I Slime! | 1990 | Dempa Shinbunsha Japan |
| Fujitsu FM Towns disk | D-Return | 1990 | Nihon Computer Club Renmei Kikaku |
| NEC PC-8801mkIISR disk | D.P.S. - Dream Program System 18 | 1990 | Alicesoft Japan |
| MSX 2 disk | D.P.S. - Dream Program System | 1990 | Alicesoft Japan |
| Fujitsu FM Towns disk | D.P.S. - Dream Program System | 1990 | Alicesoft Japan |
| Sharp X68000/NEC PC-88VA disk | D.P.S. SG - Dream Program System SG 18 | 1990 | Alicesoft Japan |
| NEC PC-9801 Series 5.25in. disk | D.P.S. SG - Dream Program System SG 18 | 1990 | Alicesoft Japan |
| MSX 2 disk | D.P.S. SG - Dream Program System SG 18 | 1990 | Alicesoft Japan |
| NEC PC-88 VA disk | D.P.S. SG - Dream Program System SG | 1990 | Alicesoft Japan |
| Fujitsu FM Towns disk | D.P.S. SG - Dream Program System SG | 1990 | Alicesoft Japan |
| MSX 2 disk | D.P.S. SG 2 - Dream Program System SG Set 2 18 | 1990 | Alicesoft Japan |
| MSX 2 disk | D.P.S. SG 3 - Dream Program System SG Set 3 18 | 1990 | Alicesoft Japan |
| Nintendo Game Boy Cart. | Daedalian Opus Model DMG-PU-USA | 1990 | Vic Tokai Japan |
| Sinclair ZX Spectrum cass. | Daemon | 1990 | Delta 3 Soft. |
| IBM PC DOS pack. | Daemon Quest: The Third Saga - The Road to the High Tsani Sw | 1990 | Blanding, Steve |
| Nintendo Famicom cart. | Dai Kaijuu DEBURAS Model DFC-24 | 1990 | Data East Corp. Japan |
| Sega Mega Drive cart. | Dai Senpuu Model G-4034 P | 1990 | SEGA Enterprises, Ltd. Tokyo, Japan |
| NEC PC-Engine HuCARD | Dai Senpuu Model NAPH-1014 P | 1990 | NEC Avenue, Ltd. Japan |
| Sharp PC-E500 type-in | Dai-chan no Nikki - Baree-hen | 1990 | Dempa Shinbunsha Japan |
| Sharp X68000 Series 5.25in. disk |  Daikairei - Dai Nihon Teikoku Kaigun no Kiseki Gentei Okaidoku Ban | 1990 | Artdink Corp. Japan |
| NEC PC-9801 Series 5.25in. disk | Daikairei - Make Kit Scenario D-E | 1990 | Artdink Corp. Japan |
| NEC PC-9801 Series 5.25in. disk | Daikairei - Make Kit Scenario F-G | 1990 | Artdink Corp. Japan |
| Sharp X68000 Series 5.25in. disk | Daikairei - Nankai no Shitou Gentei Okaidoku Ban | 1990 | Artdink Corp. Japan |
| NEC PC-9801 Series 5.25in. disk | Daikairei - Nankai no Shitou: Philippines Oki Kaisen + Java Tou Kessen | 1990 | Artdink Corp. Japan |
| Sharp X68000 Series 5.25in. disk | Daikon Oroshi Pro Uso-68k | 1990 | Hazama, Kuroo Japan |
| Sharp X1 5.25in. disk | Daikoukai Jidai Model KN10040010 | 1990 | KOEI Co., Ltd. Japan |
| NEC PC-9801 Series 5.25in. disk | Daikoukai Jidai Model KN10040020 | 1990 | KOEI Co., Ltd. Japan |
| NEC PC-9801 Series 3.5in. disk | Daikoukai Jidai Model KN10040030 | 1990 | KOEI Co., Ltd. Japan |
