| Kirby's Adventure | US | 1993-05 |
Nintendo | Commercial |
| Kiteretsu Daihyakka | JP | 1990-02-23 |
Epoch | Commercial |
| Kitty's Catch | US | |
| Prototype |
| Kiwi Kraze | AS | 1991-03 |
| Unlicensed |
| Kiwi Kraze - A Bird-Brained Adventure! | US | 1991-03 |
Taito | Commercial |
| Kiwi Kraze - A Bird-Brained Adventure! | US | 1991-03 |
Ocean Software | Prototype |
| Kkachi-wa Norae Chingu | KR | 1994 |
Hicom Entertainment | Unlicensed |
| KlashBall | US | 1991-07 |
Sofel | Commercial |
| KlashBall | US | 1991-07 |
Sofel | Prototype |
| Klax | JP | 1990-12-14 |
Tengen | Commercial |
| Klax | US | 1990-12-14 |
Tengen | Prototype |
| Klax | US | 1990-12-14 |
Tengen | Unlicensed |
| Knight Coinventure | WORLD | 2025-06 |
DobyGames | Unlicensed |
| Knight Rider | EU | 1990-07-27 |
Acclaim Entertainment | Commercial |
| Knight Rider | JP | 1988-09-30 |
Acclaim Entertainment | Commercial |
| Knight Rider | US | 1989-12 |
Acclaim Entertainment | Commercial |
| Knurps Egg Rescue | WORLD | 2022-04 |
torte00 | Unlicensed |
| Koko Adventure | KR | 1993-05 |
Daou Infosys | Unlicensed |
| Kokon Eiyuu Den - The Ancient & Modern Heros | AS | 1994 |
| Unlicensed |
| Konami Hyper Soccer | EU | 1992-06-03 |
Konami | Commercial |
| Konami Wai Wai World | JP | 1988-01-14 |
Konami | Commercial |
| Konami World III | AS | 1991-08 |
| Unlicensed |
| Konamic Sports in Seoul | JP | 1988-09 |
Konami | Commercial |
| Korean Igo | KR | 1993-05 |
DreamTech | Unlicensed |
| Korvatunturi under attQUACK | WORLD | |
| Unlicensed |
| Kosmity Atakujo | WORLD | |
| Demo |
| Koudai Baoshi - Hong | CN | |
| Unlicensed |
| Koudai Baoshi - Jin | CN | |
| Unlicensed |
| Koudai Baoshi - Lan | CN | |
| Unlicensed |
| Koudai Baoshi - Yin | CN | |
| Unlicensed |
| Koudai Guaishou - Baijin Ban | CN | |
| Unlicensed |
| Koudai Guaishou - Baiyu Ban | CN | |
| Unlicensed |
| Koudai Guaishou - Feicui Ban | CN | |
| Unlicensed |
| Koudai Guaishou - Hupo Ban | CN | |
| Unlicensed |
| Koudai Guaishou - Shuijing Ban | CN | |
| Unlicensed |
| Koudai Guaishou - Zhenzhu Ban | CN | |
| Unlicensed |
| Koudai Guaishou - Zuanshi Ban | CN | 2008 |
| Unlicensed |
| Koudai Guaishou II | CN | 2006 |
| Unlicensed |
| Koudai Guaishou III | CN | 2006 |
| Unlicensed |
| Koudai Jingling - Feicui | CN | |
| Unlicensed |
| Koudai Jingling - Hong | CN | |
| Unlicensed |
| Koudai Jingling - Jin | CN | |
| Unlicensed |
| Koudai Jingling - Shuijing | CN | |
| Unlicensed |
| Koudai Shuijing | CN | |
| Unlicensed |
| Koudai Yaoguai - Leaf Green I | CN | |
| Unlicensed |
| Koudai Yaoguai - Leaf Green II | CN | |
| Unlicensed |
| Koudai Yaoguai - Leaf Green III | CN | |
| Unlicensed |
| Koudai Yaoguai - Zuanshi Ban | CN | |
| Unlicensed |
| Koudai Zuanshi | CN | |
| Unlicensed |
| Kouryuu Densetsu Villgust Gaiden | JP | 1993-07 |
Angel | Commercial |
| Koushien | JP | 1989-10 |
SNK | Commercial |
| Krazy Kreatures | US | 1990 |
American Video Entertainment | Prototype |
| Krazy Kreatures | US | 1990 |
American Video Entertainment | Unlicensed |
| Krusty's Fun House | EU | 1992-09 |
Acclaim Entertainment | Commercial |
| Krusty's Fun House | US | 1992-09 |
Acclaim Entertainment | Commercial |
| Kuai Da Chuanshuo - Street Fighter IV | TW | 1993 |
Gouder | Unlicensed |
| Kujaku Ou | JP | 1988-09 |
Pony Canyon | Commercial |
| Kujaku Ou II | JP | 1990-08 |
Pony Canyon | Commercial |
| Kuku-Ruku | WORLD | |
| Demo |
| Kung Fu | EU | 1987-04-15 |
Nintendo | Commercial |
| Kung Fu | HK | 1985-10 |
Nintendo | Commercial |
| Kung Fu | JP | 1985-06-21 |
Nintendo | Commercial |
| Kung Fu | US | 1985-10-18 |
Nintendo | Commercial |
| Kung-Fu Heroes | US | 1989-03 |
Culture Brain USA | Commercial |
| Kunio-kun no Nekketsu Soccer League | JP | 1993-04 |
Technōs Japan | Commercial |
| Kurogane Hiroshi no Yosou Daisuki! - Kachiuma Densetsu | JP | 1990-04 |
Nichibutsu | Commercial |
| Kyonshiizu 2 | JP | 1987-09 |
Taito | Commercial |
| Kyonshiizu 2 | JP | 1987-09 |
Taito | Demo |
| Kyoro-chan Land | JP | 1992-12 |
Storm | Commercial |
| Kyoto Hana no Misshitsu Satsujin Jiken | JP | 1989-02 |
Taito | Commercial |
| Kyoto Ryuu no Tera Satsujin Jiken | JP | 1987-12 |
Taito | Commercial |
| Kyouryuu Sentai Zyuranger | JP | 1992-11 |
Angel | Commercial |
| Kyuukyoku Harikiri Koushien | JP | 1992-03-19 |
Taito | Commercial |
| Kyuukyoku Harikiri Stadium | JP | 1988-06 |
Taito | Commercial |
| Kyuukyoku Harikiri Stadium | JP | 1988-06-28 |
Taito | Prototype |
| Kyuukyoku Harikiri Stadium - '88 Senshu Shin Data Version | JP | 1988-12 |
Taito | Commercial |
| Kyuukyoku Harikiri Stadium - Heisei Gannen Ban | JP | 1989-07-21 |
Taito | Commercial |
| Kyuukyoku Harikiri Stadium III | JP | 1991-03-01 |
Taito | Commercial |
| Kyuukyoku Tiger | JP | 1989-08 |
Sammy | Commercial |