| NEC PC-9801 Series 5.25in. disk |  Hacchake Ayayo-san II - Ikenai Holiday 18 | 1990 | Hard Japan |
| NEC PC-9801 Series 5.25in. disk | Hole Chaser | 1990 | Birdy Soft. Japan |
| NEC PC-9801 Series 5.25in. disk | I/O Magazine Disk - August 1990 | 1990 | Unknown Japan |
| NEC PC-9801 Series 5.25in. disk | I/O Magazine Disk - December 1990 | 1990 | Unknown Japan |
| NEC PC-9801 Series 5.25in. disk | I/O Magazine Disk - January 1990 | 1990 | Unknown Japan |
| NEC PC-9801 Series 5.25in. disk | I/O Magazine Disk - July 1990 | 1990 | Unknown Japan |
| NEC PC-9801 Series 5.25in. disk | I/O Magazine Disk - June 1990 | 1990 | Unknown Japan |
| NEC PC-9801 Series 5.25in. disk | I/O Magazine Disk - March 1990 | 1990 | Unknown Japan |
| NEC PC-9801 Series 5.25in. disk | I/O Magazine Disk - May 1990 | 1990 | Unknown Japan |
| NEC PC-9801 Series 5.25in. disk | I/O Magazine Disk - November 1990 | 1990 | Unknown Japan |
| NEC PC-9801 Series 5.25in. disk | I/O Magazine Disk - October 1990 | 1990 | Unknown Japan |
| NEC PC-9801 Series 5.25in. disk | I/O Magazine Disk - September 1990 | 1990 | Unknown Japan |
| NEC PC-9801 Series 5.25in. disk | Idaten Ikase Otoko - Sengo Hen | 1990 | Family Soft. Japan |
| NEC PC-9801 Series 5.25in. disk | Ikase Otoko Nyuumon - Ai o Arigato 18 | 1990 | Takeru Co. Ltd Japan |
| NEC PC-9801 Series 5.25in. disk | Illumina! | 1990 | Fairytale Japan |
| NEC PC-9801 Series 5.25in. disk | Imperial Force | 1990 | SystemSoft Corp. Japan |
| NEC PC-9801 Series 5.25in. disk | Ishido - The Way of Stones | 1990 | ASCII Corp. Japan |
| NEC PC-9801 Series 5.25in. disk | Jan-borg Suzume | 1990 | Studio Offside |
| NEC PC-9801 Series 5.25in. disk | Kaerimichi wa Kiken ga Ippai 18 | 1990 | DO Corp. Japan |
| NEC PC-9801 Series 5.25in. disk | Kagerou Meikyuu | 1990 | Heart Soft. Japan |
| NEC PC-9801 Series 5.25in. disk | Kikou Shidan - Panzer Division | 1990 | Artdink Corp. Japan |
| NEC PC-9801 Series 5.25in. disk | Klax Model MH-1643 | 1990 | Hudson Soft. Hudson Group Japan |
| NEC PC-9801 Series 5.25in. disk | Kobe Renai Monogatari | 1990 | ZainSoft. Japan |
| NEC PC-9801 Series 5.25in. disk | L'Empereur Model KN10021030 | 1990 | KOEI Co., Ltd. Japan |
| NEC PC-9801 Series 5.25in. disk | Lemon Angel 18 | 1990 | MIN Japan |
| NEC PC-9801 Series 5.25in. disk | Lenam - Sword of Legend | 1990 | Hertz Japan |
| NEC PC-9801 Series 5.25in. disk | Ligarued 18 | 1990 | Game Technopolis Japan |
| NEC PC-9801 Series 5.25in. disk | Lipstick. ADV 2 18 | 1990 | Fairytale Japan |
| NEC PC-9801 Series 5.25in. disk | Mahjong Clinic Zoukan-gou | 1990 | Home Data Japan |
| NEC PC-9801 Series 5.25in. disk | Mahjong Kyou Jidai Special II - Bouken Hen | 1990 | Micronet Co., Ltd. Japan |
| NEC PC-9801 Series 5.25in. disk | Mahjong Plus | 1990 | DB-SOFT Japan |
| NEC PC-9801 Series 5.25in. disk | Mainichi ga H | 1990 | Heart Soft. Japan |
| NEC PC-9801 Series 5.25in. disk | Mankai Denshoku | 1990 | Victor Musical Industries, Inc. Japan |
| NEC PC-9801 Series 5.25in. disk | Max Series 5: Pure My Dool 18 | 1990 | Agumix Japan |
| NEC PC-9801 Series 5.25in. disk | Märchen Paradise | 1990 | Great Japan |
| NEC PC-9801 Series 5.25in. disk | Mercury - The Prime Master | 1990 | Maxima Japan |
| NEC PC-9801 Series 5.25in. disk | Metal Fork | 1990 | KUNI Soft. Japan |
| NEC PC-9801 Series 5.25in. disk | Misty Blue Model E-G252 | 1990 | Enix, Ltd. Japan |
| NEC PC-9801 Series 5.25in. disk | Misty Vol. 3 | 1990 | Data West, Inc. Japan |
| NEC PC-9801 Series 5.25in. disk | Misty Vol. 4 | 1990 | Data West, Inc. Japan |
