| title | developer | year | game type | | pop. |
|---|
| Kabul Spy | Starcraft | 1984 | NEC PC9801 | adventure | image | | label | |
| Kaerimichiwa Kikenga Ippai | D.O. | ? | NEC PC9801 | | image | | | |
| Kagaku Ninja Tai Gatchaman | FamilySoft | 1994 | NEC PC9801 | adventure Manga | image | | label | |
| Kagami - Mirror | Studio Twinkle | ? | NEC PC9801 | adventure | image | | | |
| Kagayake! Kirakira Senshi Risky Jewel | Natsume | ? | NEC PC9801 | casino/cards adventure | image | | label | |
| Kageroomeikyuu | Heart Soft | ? | NEC PC9801 | adventure | image | | | |
| Kakinoki Shougi | Ascii | ? | NEC PC9801 | board game | image | | label | |
| Kakyusei | Elf | 1996 | NEC PC9801 | adventure Manga | image | | label | |
| Kamikuishiki-mura Monogatari | HappySoft | 1995 | NEC PC9801 | | image | | label | |
| Kaminomachi | Panther Software | ? | NEC PC9801 | role-play Manga | image | | | |
| Kanako | Red-Zone | 1996 | NEC PC9801 | adventure Manga | image | | label | |
| Kangoku Country Club | Doll House | 1996 | NEC PC9801 | puzzle | image | | label | |
| Kankin | Illusion | 1995 | NEC PC9801 | adventure Manga | image | | | |
| Kansoukyoushuu - Sensual training | Tetratech | 1997 | NEC PC9801 | simulation Manga | image | | | |
| Kao Derby | Progress | ? | NEC PC9801 | | image | | | |
| Kara no naka no kotori | Black Package | 1996 | NEC PC9801 | adventure Manga | image | | label | |
| Karateka | Broderbund Japan | 1988 | NEC PC9801 | fighting | image | | label | |
| Karei Naru Jinsei - Minnasan no Okage desu | Fairytale | 1991 | NEC PC9801 | board game Manga | image | | | |
| Karei Naru Jinsei 2 | Fairytale | 1994 | NEC PC9801 | board game Manga | image | | | |
| Kasenkyuu Raika | Ringer Bell | 1994 | NEC PC9801 | casino/cards Manga | image | | label | |
| Kassen Sekigahara | Artdink | ? | NEC PC9801 | | image | | | |
| Kateikyoushi | Banana Soft | ? | NEC PC9801 | | image | | | |
| Kawanakajima Ibunroku | KSK | ? | NEC PC9801 | | image | | | |
| Kaze he | Heart Soft | ? | NEC PC9801 | | image | | | |
| Keep the Heart | ? | ? | NEC PC9801 | role-play | image | | | |
| Kekkou Kamen - Oshioki Paradise no Maki | Dynamic Productions | 1994 | NEC PC9801 | role-play Manga | image | | label | |
| Kekkou Kamen 2 - Oshioki Densetsu no Kami | Dynamic Productions | 1994 | NEC PC9801 | adventure Manga | image | | | |
| Kerakerasei | Cocktail Soft | ? | NEC PC9801 | | image | | | |
| Kidou Senshi Gundam Part 1: Gundam Daichi ni Tatsu | Rapport | 1983 | NEC PC9801 | adventure Manga | | | label | |
| Kigen - Kagayaki no Hasha | Riverhill Soft | 1991 | NEC PC9801 | role-play Manga | image | | | |
| Kikai Jikake no Marian | Janis | 1994 | NEC PC9801 | adventure Manga | image | | | |
| Kikan Dismix 90 Nenmatsugo | Softpal | ? | NEC PC9801 | | | | | |
| Kikan Dismix Sokango | Softpal | 1990 | NEC PC9801 | puzzle | image | | | |
| Kikan Dismix Sokanjunbigo | Softpal | 1989 | NEC PC9801 | puzzle | image | | | |
| Kikou Shidan | Artdink | 1990 | NEC PC9801 | strategy | image | | | |
| Kikou Shidan 2 | Artdink | ? | NEC PC9801 | strategy | image | | | |
| Kimagure Orange Road - Natsu no Mirage | Micro Cabin | 1988 | NEC PC9801 | adventure Manga | image | | label | |
| Kindan no Paradise | Zenryuutuu | 1989 | NEC PC9801 | adventure | image | | label | |
| King's Bounty: Nusumareta Chitsujo | Starcraft | 1994 | NEC PC9801 | strategy Fantasy | image | | label | |
| King's Dungeon - The Story of Heroes | Soft Plan | 1992 | NEC PC9801 | role-play | image | | | |
| King's Quest V: Absence Makes the Heart Go Yonder! | Sierra On-Line Japan | 1991 | NEC PC9801 | adventure | image | | label | |
| Kira Kira Megami Sensei | Birdy Soft | 1993 | NEC PC9801 | trivia/quiz Manga | image | | | |
| Kirishima Shinryoshitsu no Gogo | May-Be Soft | 1995 | NEC PC9801 | adventure Manga | image | | | |
| Kishidensetsu | Warlock | 1994 | NEC PC9801 | strategy | image | | | |
| Kisō Shinden: Gen-Kaiser | TGL | 1995 | NEC PC9801 | role-play | image | | | |
| Kiss Of Murder | Riverhill Soft | 1988 | NEC PC9801 | adventure | | | | |
| Kitty World 2 | Griffon | 1994 | NEC PC9801 | puzzle Manga | image | | | |
| Kiwame | Log | 1992 | NEC PC9801 | board game | image | | | |
| Kiwame 2 | Log | 1993 | NEC PC9801 | board game | image | | label | |
| Kiwame Daidougi | Mainichi Communications | 1995 | NEC PC9801 | board game | image | | | |
| Klax | Hudson Soft | 1990 | NEC PC9801 | puzzle | image | | label | |
| Knights of the Sky: Oozora no Kishi | Microprose Japan | 1993 | NEC PC9801 | simulation flight Historical | image | | label | |
| KO Century Beast 3 Return of Gaia | Matrix | ? | NEC PC9801 | role-play | image | subject | | |
| Kohakuiro no Yuigon | Riverhill Soft | 1990 | NEC PC9801 | adventure | image | | | |
| Koihime: Mystic Princess | Elf | 1994 | NEC PC9801 | adventure Manga | image | | label | |
| Koko wa Rakuensou 2 | Foster | 1995 | NEC PC9801 | adventure | image | | label | |
| Kokowa Rakuenso 1 | Foster | 1994 | NEC PC9801 | adventure Manga | image | | | |
| Kokowa Rakuenso 2 | Foster | 1995 | NEC PC9801 | adventure | image | | label | |
| Konoyo no Hatede Koiwo Utau Shoujo Yu-No | Elf | 1996 | NEC PC9801 | adventure Manga | image | | label | |
| Koosoku | ? | ? | NEC PC9801 | adventure Manga | image | | label | |
| Koroshi no dress | Fairytale | 1987 | NEC PC9801 | adventure | image | | label | |
| Koroshi no dress 2 | Fairytale | 1989 | NEC PC9801 | adventure | image | | label | |
| Koroshi no dress 3 | Fairytale | ? | NEC PC9801 | adventure | image | | | |
| Kote de Mekuru | Compile | 1995 | NEC PC9801 | strategy | image | | | |
| Kotetsu no Daibouken | T2 | 1996 | NEC PC9801 | role-play Manga | image | | | |
| Kotohigaoka Story | Miami Soft | 1995 | NEC PC9801 | adventure Manga | image | | label | |
| Koubosenki | General Support Software | 1994 | NEC PC9801 | simulation | image | | | |
| Koukan Nikki | Fairy Dust | 1994 | NEC PC9801 | adventure Manga | image | | | |
| Koukan Nikki 2 | Fairy Dust | 1995 | NEC PC9801 | adventure Manga | image | | | |
| Koukoukioshi | Wishbone;Taki;d&d | 1994 | NEC PC9801 | adventure Manga | image | | | |
| Koukoukioshi | Wishbone;Taki;d&d | 1994 | NEC PC9801 | adventure Manga | image | | | |
| Kounai Shasei 1 | Fairytale X Shitei | 1991 | NEC PC9801 | | image | | | |
| Kouryuki | Koei | ? | NEC PC9801 | simulation Manga | image | | | |
| Kousoku | Persian Soft | 1995 | NEC PC9801 | adventure Manga | image | | | |
| Kousoku Chojin | Foster | 1996 | NEC PC9801 | adventure Manga | image | | label | |
| Kremlin Twilight | WittyWolf | 1994 | NEC PC9801 | adventure | image | | | |
| Kudokikata Oshiemasu | Hard | 1986 | NEC PC9801 | adventure Manga | image | | | |
| Kudokikata Oshiemasu 2: Kind Gal's | Hard | 1987 | NEC PC9801 | adventure Manga | | | | |
| Kunyan no Namida | General Software | ? | NEC PC9801 | | image | | | |
| Kurayami | Melody | 1996 | NEC PC9801 | adventure Manga | image | | label | |
| Kuro no Danshou | Abogado Powers | 1995 | NEC PC9801 | adventure | image | | label | |
| Kuro no Ken - Blade of Darkness | Forest | 1995 | NEC PC9801 | role-play | image | | | |
| Kuroneko Kan | Fairy Dust | 1993 | NEC PC9801 | adventure | image | | label | |
| Kuru | Ascomoid | ? | NEC PC9801 | shooter | image | | | |
| Kuru Kuru Party - Princess quest | Cocktail Soft | 1993 | NEC PC9801 | role-play Manga | image | | | |
| Kuruju | ZainSoft | ? | NEC PC9801 | | image | | | |
| Kurunpa! | Circle InferFace | 1995 | NEC PC9801 | puzzle Manga | image | | | |
| Kurutta Kajitsu | Fairytale | 1992 | NEC PC9801 | adventure Manga | image | | | |
| Kusuriyubi no Kyoukasho | Active | 1996 | NEC PC9801 | adventure | image | | label | |
| Kuugun Daisenryaku | System Soft | 1994 | NEC PC9801 | | image | | | |
| Kyoko no Ijiwaru | Ponytale Soft | 1994 | NEC PC9801 | adventure Manga | image | | | |
| Kyuukyoku Kakutou Shinan | Softec | ? | NEC PC9801 | role-play | image | | | |
| Kyuukyoku Mahjong Idol Graphic | Game Express | ? | NEC PC9801 | | image | | | |
