| Jissen Pachi-Slot Pachinko Hisshouhou! Sammy's Collection - Hokuto no Ken Wii | 2007 | wii |
| Jissen ni Yakudatsu Tsumego | 2000 | gbc |
| Jissen! Mahjong Shinan | 1995 | snes |
| Jitsuroku Maru-chi Mahjong | 1993 | arcade |
| Jiuji Mahjong II | 1993 | genesis |
| Jiyou Gaoshou | 1999 | arcade |
| Joker Bonus | | arcade |
| Joker Card | 1991 | arcade |
| Joker Card / Multi Card | 1991 | arcade |
| Joker Card 300 | 1993 | arcade |
| Joker Master 2000 Special Edition | 1999 | arcade |
| Joker Poker | 1983 | arcade |
| Joker Poker | 2002 | arcade |
| Joker Poker 2000 | 1988 | arcade |
| Joker Poker With Hi-Lo Double-Up | 1984 | arcade |
| Jolli Witch | 1994 | arcade |
| Jolly Card | 1985 | arcade |
| Jolly Card | 1990 | arcade |
| Jolly Card Professional 2.0 | 1993 | arcade |
| Jolly Game | 1993 | arcade |
| Jolly Joker | | arcade |
| Jong Shin | 1986 | arcade |
| Jong Tou Ki | 1990 | arcade |
| Jong Yu Ki | 1988 | arcade |
| Jongbou | 1987 | nes |
| Jongkyo | 1985 | arcade |
| Jongputer | 1981 | arcade |
| Joryuu Janshi ni Chousen GB - Watashi-tachi ni Chousen Shitene! | 1999 | gbc |
| Joryuu Syougi Kyoushitsu | 1997 | arcade |
| Joushou Mahjong Tenpai | 1995 | snes |
| Judas Code | 2014 | vita |
| Jue Zhan Shanghai Tan | 2006 | arcade |
| Junai - Manatsu no First Kiss | 1998 | arcade |
| Junai 2 - White Love Story | 1998 | arcade |
| Jungle | 2001 | arcade |
| Just Deal With It! | 2018 | ps4 |
| Jyangokushi: Haoh no Saihai | 1999 | arcade |
| Kabuki Chou Reach Mahjong Tonpuusen | 1994 | snes |
| Kaette Kita Pachio-kun - Dream Collection | 1998 | ps1 |
| Kaettekita! Gunjin Shougi - Nanya Sore! | 1989 | nes |
| Kaimen Hu | 1996 | arcade |
| Kajot Card | 1993 | arcade |
| Kakinoki Shougi | 1994 | 3do, saturn |
| Kakinoki Shougi | 1994 | ps1 |
| Kakinoki Shougi | 1995 | snes |
| Kakinoki Shougi II | 1998 | ps1 |
| Kaku-San-Sei Million Arthur | 2013 | 3ds, vita |
| Kamen Rider Battle - GanbaRide - Card Battle Taisen | 2010 | nds |
| Kamen Rider SD - Granshocker no Yabou | 1993 | nes |
| Kami no Kijutsu - Illusion of the Evil Eyes | 2002 | gba |
| Kanatsuen no Onna | 1988 | arcade |
| Kanazawa Shougi | 1995 | saturn |
| Kanazawa Shougi '95 | 1995 | ps1 |
| Kanazawa Shougi - Tsuki | 1999 | ps1 |
| Kankoku Hanafuda Go-Stop | 2001 | arcade |
| Katekyoo Hitman Reborn! DS - Vongola Shiki - Taisen Battle Sugoroku | 2008 | nds |
| Katou Hifumi Kudan - Shougi Club | 1999 | ps1 |
| Katou Hifumi Kudan - Shougi Club | 1997 | snes |
| Katou Hifumi Kudan - Shougi Kyoushitsu | 1999 | gbc |
| Kessen! Dokapon Oukoku IV - Densetsu no Yuusha-tachi | 1993 | snes |
| Kid's Cards | 2006 | gba |
| Kidou Gekidan Haro Ichiza - Gundam Mahjong +Z - Sarani Dekiru You ni Natta Na! | 2007 | nds |
| Kidou Gekidan Haro Ichiza - Gundam Mahjong DS - Oyaji ni mo Agarareta Koto nai no ni! | 2005 | nds |
| Kidou Senkan Nadesico - Ruri Ruri Mahjong | 1999 | gbc |
| Kiki-Ippatsu Mayumi-chan | 1988 | arcade |
| Kikuni Masahiko no Jantoushi Doraou | 1993 | snes |
| Kikuni Masahiko no Jantoushi Doraou 2 | 1993 | snes |
| Kilka Card Gods | 2014 | vita |
| Kimagure My Baby - Musume no Sugoroku Seichouki | 1998 | ps1 |
| Kimble Double HI-LO | | arcade |
| Kindai Mahjong Special | 1995 | snes |
| The King of Fighters - Battle de Paradise | 2000 | ngpc |
| Kingyo Chuuihou! 2 - Gyopi-chan o Sagase! | 1992 | gb |
| Kisekae Hanafuda | 1995 | arcade |
| Kisekae Mahjong | 1995 | arcade |
| Kitahei Gold | 1999 | dreamcast |
| Kiteretsu Daihyakka - Choujikuu Sugoroku | 1995 | snes |
| Kiwame Daidougi | 2002 | ps1 |
| Kiwame Daidougi - Tsumuya Tsumazaruya | 1996 | ps1 |
| Kiwame Mahjong DX II - The 4th Mondo 21 Cup Competition | 2003 | ps2 |
| Kiwame Mahjong Deluxe - Mirai Senshi 21 | 2001 | gba |
| Kkotbinyeo | 1997 | arcade |
| Kkotbinyeo Special | 1997 | arcade |
| The Klirk | 2025 | genesis |
| KlonDike+ | 1999 | arcade |
| Kochira Katsushikaku Kameari Kouenmae - Hashutsujo - Nakagawa Land Dai-Race! no Maki | 1997 | saturn |
| Koi Koi | 1982 | arcade |
| Koi Koi Mahjong | 2000 | ngpc |
| Koi Koi Part 2 | 1982 | arcade |
| Koi Koi Shimasho - Super Real Hanafuda | 1995 | arcade |
| Koi Koi Shimasho 2 - Super Real Hanafuda | 1997 | arcade |
| Kojima Takeo - Mahjong Teiou | 1996 | ps1 |
| Kon'ya mo Dorubako!! 2000 | 2000 | ps1 |
| Konnano Hajimete! | 2001 | arcade |
| Korean Igo | 1993 | nes |
| Koten Tsumego-shuu - Shijin no Maki | 1996 | ps1 |
| Kou-rate Ura Mahjong Retsuden Mukoubuchi - Goburei, Last desu ne | 2007 | ps2 |
| Kousoku Shikou Shougi Ou | 1995 | snes |
| Kuaile Xiyou Ji | 2001 | arcade |
| Kuma no Pooh-tarou - Sora wa Pink da! Zen'in Shuugou!! | 1996 | ps1 |