| Game Name | System |
|---|
| Kaleidoscope (051) (Qps) (Scorpion 4) (set 2) | MAME |
| Kaleidoscope Club (Empire) (MPU5) | MAME |
| Kamakazi III (superg hack) | MAME |
| Kameleon (JPM) (IMPACT) | MAME |
| Kamikaze | MAME |
| Kamikaze (Potomac Games) | MAME |
| Kamikaze Cabbie | MAME |
| Kanatsuen no Onna [BET] (Japan 880905) | MAME |
| Kangaroo | MAME |
| Kangaroo (Atari) | MAME |
| Kangaroo (bootleg) | MAME |
| Kankoku Hanafuda Go-Stop | MAME |
| Kaos | MAME |
| Kapang! (Crystal) (IMPACT) (set 1) | MAME |
| Kapang! (Crystal) (IMPACT) (set 2) | MAME |
| Karaoke Quiz Intro Don Don! (J 960213 V1.000) | MAME |
| Karate Blazers (US) | MAME |
| Karate Blazers (World, set 1) | MAME |
| Karate Blazers (World, set 2) | MAME |
| Karate Blazers (bootleg with Street Smart sound hardware) | MAME |
| Karate Champ (US VS version, set 1) | MAME |
| Karate Champ (US VS version, set 2) | MAME |
| Karate Champ (US) | MAME |
| Karate Dou (Japan) | MAME |
| Karian Cross (Rev. 1.0) | MAME |
| Karnov (Japan) | MAME |
| Karnov (Japan, bootleg with NEC D8748HD) | MAME |
| Karnov (US, rev 5) | MAME |
| Karnov (US, rev 6) | MAME |
| Karnov's Revenge / Fighter's History Dynamite | MAME |
| Karous (Japan) (GDL-0040) | MAME |
| Kart Duel (Japan, KTD1/VER.A) | MAME |
| Kasino '89 | MAME |
| Kasparov Stratos Chess Computer | MAME |
| Kay 1024 | MAME |
| Kaypro 10 | MAME |
| Kaypro 2x | MAME |
| Kaypro 4 - 4/83 | MAME |
| Kaypro 4 - 4/84 | MAME |
| Kaypro 4 plus88 - 4/83 | MAME |
| Kaypro II - 2/83 | MAME |
| Kaypro Robie | MAME |
| Keisatsukan Shinjuku 24ji (ver JAC) | MAME |
| Keith Courage In Alpha Zones | MAME |
| Keks (060328 World) | MAME |
| Keks (060403 World) | MAME |
| Keks (070119 Russia) | MAME |
| Keks (090604 Lottery) | MAME |
| Keks (090727 Entertainment) | MAME |
| Keks (bootleg, 060328, backdoor) | MAME |
| Keks (bootleg, 060328, banking address hack) | MAME |
| Keks (bootleg, 060328, banking address hack, changed version text) | MAME |
| Keks (bootleg, 060403, LOTOS KS01) | MAME |
| Keks (bootleg, 060403, LOTTOGAME (I)) | MAME |
| Keks (bootleg, 060403, VIDEO GAME-1 KS01 set 1) | MAME |
| Keks (bootleg, 060403, VIDEO GAME-1 KS01 set 2) | MAME |
| Keks (bootleg, 060403, banking address hack) | MAME |
| Keks (bootleg, 060403, banking address hack, changed version text) | MAME |
| Keks (bootleg, 060403, banking address hack, payout percentage 60) | MAME |
| Keks (bootleg, 070119, banking address hack set 1) | MAME |
| Keks (bootleg, 070119, banking address hack set 2) | MAME |
| Ken Sei Mogura: Street Fighter II (Japan 940418, Ver 1.00) | MAME |
| Ken-Go (set 1) | MAME |
| Ken-Go (set 2) | MAME |
| Ker - Chinq (JPM) | MAME |
| Kero Kero Keroppi no Issyoni Asobou (Japan) | MAME |
| Kero Kero Keroppi's Let's Play Together (USA, Version 2.0) | MAME |
| Ketsui: Kizuna Jigoku Tachi (2003/01/01 Master Ver) | MAME |
| Ketsui: Kizuna Jigoku Tachi (2003/01/01 Master Ver.) | MAME |
| Ketsui: Kizuna Jigoku Tachi (2003/01/01. Master Ver.) | MAME |
| Ketsui: Kizuna Jigoku Tachi (2003/01/01. Master Ver.) (alt rom fill) | MAME |
| Ketsui: Kizuna Jigoku Tachi (2003/01/01. Master Ver., bootleg cartridge conversion) | MAME |
| Ketsui: Kizuna Jigoku Tachi (2012/04/17 ARRANGE VER) (hack) | MAME |
| Ketsui: Kizuna Jigoku Tachi (2012/04/17 FAST. VER) (hack) | MAME |
| Ketsui: Kizuna Jigoku Tachi (2012/06/26 ARRANGE 1.5 VER) (hack) | MAME |
| Ketsui: Kizuna Jigoku Tachi (2012/06/26 ARRANGE 1.51 VER) (hack) | MAME |
| Ketsui: Kizuna Jigoku Tachi (2012/06/27 MR.STOIC 1.5 VER) (hack) | MAME |
| Ketsui: Kizuna Jigoku Tachi (2012/06/27 MR.STOIC 1.51 VER) (hack) | MAME |
| Ketsui: Kizuna Jigoku Tachi (2014/07/16 ARRANGE 1.7 VER) (hack) | MAME |
| Keyboardmania | MAME |
| Keyboardmania 2nd Mix | MAME |
| Keyboardmania 3rd Mix | MAME |
| KiKi KaiKai | MAME |
| Kick '4' Cash (Export) | MAME |
| Kick (cocktail) | MAME |
| Kick (upright) | MAME |
| Kick Boy | MAME |
| Kick Goal | MAME |
| Kick Off (Japan) | MAME |
| Kick Rider | MAME |
| Kick Start - Wheelie King | MAME |
| Kick The Goal Soccer | MAME |
| Kick and Run (US) | MAME |
| Kick and Run (World) | MAME |
| Kick for the Goal | MAME |
| Kicker | MAME |
| Kickle Cubele | MAME |
| Kickman (upright) | MAME |
| Kid Chameleon (Mega-Tech) | MAME |
| Kid Niki - Radical Ninja (US) | MAME |
