| MAME Name | Description | Official | Alternate | VC WS | ||
 | kabukikl | Far East of Eden - Kabuki Klash / Tengai Makyou - Shin Den | 685 kB 06-Aug-2022 Download | - | 2.99 MB 06-Aug-2022 Download | |
 | kabukiz | Kabuki-Z (World) | - | - | 144 kB 06-Aug-2022 Download | |
 | kageki | Kageki (World) | 3.57 MB 06-Aug-2022 Download | - | 5.76 MB 06-Aug-2022 Download | |
 | kaiserkn | Kaiser Knuckle (Ver 2.1O 1994/07/29) | 35.6 kB 06-Aug-2022 Download | - | 257 kB 06-Aug-2022 Download | |
| kaitei | Kaitei Takara Sagashi | - | - | 231 kB 06-Aug-2022 Download | |
| kamenrid | Masked Riders Club Battle Race / Kamen Rider Club Battle Racer | - | - | 122 kB 06-Aug-2022 Download | |
 | kamikaze | Kamikaze | 4.17 MB 06-Aug-2022 Download | - | 540 kB 06-Aug-2022 Download | |
| kamikcab | Kamikaze Cabbie | - | - | 196 kB 06-Aug-2022 Download | |
 | kangaroo | Kangaroo | 660 kB 06-Aug-2022 Download | - | 638 kB 06-Aug-2022 Download | |
 | kangarooa | Kangaroo (Atari) | - | - | 674 kB 06-Aug-2022 Download | |
 | kaos | Kaos | 2.32 MB 06-Aug-2022 Download | - | 273 kB 06-Aug-2022 Download | |
| karatblz | Karate Blazers (World, set 1) | - | - | 152 kB 06-Aug-2022 Download | |
| karatour | The Karate Tournament | - | - | 221 kB 06-Aug-2022 Download | |
| karianx | Karian Cross (Rev. 1.0) | - | - | 204 kB 06-Aug-2022 Download | |
 | karnov | Karnov (US, rev 6) | 32.5 MB 06-Aug-2022 Download | - | 1.98 MB 06-Aug-2022 Download | |
 | karnovr | Karnov's Revenge / Fighter's History Dynamite | - | - | 2.21 MB 06-Aug-2022 Download | |
 | kas89 | Kasino '89 | 1.37 MB 06-Aug-2022 Download | - | - | |
 | kaypro10 | Kaypro 10 - 1983 | 10.3 MB 06-Aug-2022 Download | - | - | |
 | kayproii | Kaypro II - 2/83 | 3.22 MB 06-Aug-2022 Download | - | - | |
| kazan | Ninja Kazan (World) | - | - | 189 kB 06-Aug-2022 Download | |
 | kbash | Knuckle Bash | - | - | 433 kB 06-Aug-2022 Download | |
 | kbash2 | Knuckle Bash 2 (bootleg) | - | - | 398 kB 06-Aug-2022 Download | |
 | kbilly | The Adventures of Bayou Billy (handheld) | - | 23.4 MB 17-Sep-2023 Download | - | |
 | kblades | Blades of Steel (handheld) | - | 21.0 MB 17-Sep-2023 Download | - | |
| kbottom9 | Bottom of the Ninth (handheld) | - | 24.0 MB 17-Sep-2023 Download | - | |
 | kbucky | Bucky O'Hare (handheld) | - | 15.6 MB 17-Sep-2023 Download | - | |
 | kchamp | Karate Champ (US) | 1.00 MB 06-Aug-2022 Download | - | 4.06 MB 06-Aug-2022 Download | |
 | kcontra | Contra (handheld) | - | 14.6 MB 17-Sep-2023 Download | - | |
 | kdribble | Double Dribble (handheld) | 1.00 MB 06-Aug-2022 Download | 19.3 MB 17-Sep-2023 Download | - | |
 | keith | Keith Courage In Alpha Zones (United Amusements PC Engine) | 5.62 MB 06-Aug-2022 Download | - | - | |
| kengo | Ken-Go (World) | - | - | 224 kB 06-Aug-2022 Download | |
| keroppi | Kero Kero Keroppi's Let's Play Together (USA, Version 2.0) | - | - | 164 kB 06-Aug-2022 Download | |
 | ket | Ketsui: Kizuna Jigoku Tachi (2003/01/01. Master Ver.) | 1.26 MB 06-Aug-2022 Download | - | 933 kB 19-May-2023 Download | |
| kf2k5uni | The King of Fighters 10th Anniversary 2005 Unique (The King of Fighters 2002 bootleg) | - | - | 208 kB 06-Aug-2022 Download | |
 | kgalah | King Galah (0200536V, NSW/ACT) | - | 619 kB 06-Aug-2022 Download | - | |
 | kgarfld | Garfield (Konami) | - | 20.7 MB 17-Sep-2023 Download | - | |
 | kgbird | K.G. Bird (4VXFC5341, New Zealand, 5c) | 605 kB 06-Aug-2022 Download | - | - | |
 | kgbirda5 | K.G. Bird (0200024V, NSW/ACT) | - | 624 kB 06-Aug-2022 Download | - | |
 | kgradius | Gradius (handheld) | - | 13.1 MB 17-Sep-2023 Download | - | |
 | kick | Kick (upright) | 3.86 MB 06-Aug-2022 Download | - | 4.71 MB 06-Aug-2022 Download | |
| kickboy | Kick Boy | - | - | 612 kB 19-May-2023 Download | |
| kicker | Kicker | - | - | 378 kB 06-Aug-2022 Download | |
| kickgoal | Kick Goal (set 1) | - | - | 55.7 kB 06-Aug-2022 Download | |
 | kickman | Kickman (upright) | - | - | 415 kB 06-Aug-2022 Download | |
| kicknrun | Kick and Run (World) | - | - | 128 kB 19-May-2023 Download | |
| kickoff | Kick Off - Jaleco Cup (Japan) | - | - | 119 kB 06-Aug-2022 Download | |
 | kickridr | Kick Rider | - | - | 1.72 MB 06-Aug-2022 Download | |
 | kidniki | Kid Niki - Radical Ninja (World) | 4.04 MB 06-Aug-2022 Download | - | 193 kB 06-Aug-2022 Download | |
| kikcubic | Meikyu Jima (Japan) | - | - | 193 kB 06-Aug-2022 Download | |
 | kikikai | KiKi KaiKai | 73.2 kB 06-Aug-2022 Download | - | 448 kB 06-Aug-2022 Download | |
 | kikstart | Kick Start: Wheelie King | - | - | 518 kB 06-Aug-2022 Download | |
| killbld | The Killing Blade / Ao Jian Kuang Dao (ver. 109, Chinese Board) | - | - | 236 kB 06-Aug-2022 Download | |
| killbldp | The Killing Blade Plus / Ao Jian Kuang Dao Jiaqiang Ban (China, ver. 300) | - | - | 166 kB 06-Aug-2022 Download | |
| killcom | Killer Comet | - | - | 203 kB 19-May-2023 Download | |
 | kim1 | KIM-1 | 20.0 MB 06-Aug-2022 Download | - | - | |
 | kingball | King & Balloon (US) | 11.5 MB 06-Aug-2022 Download | - | 747 kB 19-May-2023 Download | |
 | kingdmgp | Kingdom Grandprix | 4.42 MB 06-Aug-2022 Download | - | 1.29 MB 19-May-2023 Download | |
 | kingofb | King of Boxer (World) | 13.8 MB 06-Aug-2022 Download | - | 680 kB 06-Aug-2022 Download | |
 | kingpin | Kingpin | 815 kB 06-Aug-2022 Download | - | - | |
 | kinst | Killer Instinct | - | - | 2.19 MB 19-May-2023 Download | |
 | kinst2 | Killer Instinct 2 | - | 21.8 MB 19-May-2023 Download | 1.73 MB 19-May-2023 Download | |
 | kirameki | Kirameki Star Road (Ver 2.10J 1997/08/29) | 35.6 kB 06-Aug-2022 Download | - | - | |
| kittenk | Kitten Kaboodle | - | - | 124 kB 06-Aug-2022 Download | |
 | kizuna | Kizuna Encounter - Super Tag Battle / Fu'un Super Tag Battle | - | - | 4.80 MB 06-Aug-2022 Download | |
 | kkotnoli | Kkot No Li (Kill the Bees) | 598 kB 06-Aug-2022 Download | - | - | |
 | klax | Klax (version 6) | 1.19 MB 06-Aug-2022 Download | - | 3.04 MB 06-Aug-2022 Download | |
 | kloneran | The Lone Ranger (handheld) | 458 kB 06-Aug-2022 Download | 14.4 MB 17-Sep-2023 Download | - | |
| knascar | Bill Elliott's NASCAR Racing (handheld) | - | 14.8 MB 17-Sep-2023 Download | - | |
| knckhead | Knuckle Heads (World) | - | - | 250 kB 06-Aug-2022 Download | |
| kncljoe | Knuckle Joe (set 1) | - | - | 238 kB 06-Aug-2022 Download | |
 | knfl | NFL Football (Konami, handheld) | 2.43 MB 06-Aug-2022 Download | 19.1 MB 17-Sep-2023 Download | - | |
 | knights | Knights of the Round (World 911127) | 471 kB 06-Aug-2022 Download | - | 654 kB 06-Aug-2022 Download | |
 | kod | The King of Dragons (World 910805) | 74.5 MB 06-Aug-2022 Download | - | 5.29 MB 06-Aug-2022 Download | |
 | kof2000 | The King of Fighters 2000 (NGM-2570 ~ NGH-2570) | 794 kB 06-Aug-2022 Download | - | 8.09 MB 06-Aug-2022 Download | |
 | kof2001 | The King of Fighters 2001 (NGM-262?) | 544 kB 06-Aug-2022 Download | - | 5.33 MB 06-Aug-2022 Download | |
 | kof2002 | The King of Fighters 2002 (NGM-2650 ~ NGH-2650) | 1.28 MB 06-Aug-2022 Download | - | 6.65 MB 06-Aug-2022 Download | |
 | kof2003 | The King of Fighters 2003 (NGM-2710, Export) | 665 kB 06-Aug-2022 Download | - | 5.48 MB 06-Aug-2022 Download | |
 | kof94 | The King of Fighters '94 (NGM-055 ~ NGH-055) | 1.12 MB 06-Aug-2022 Download | - | 6.62 MB 06-Aug-2022 Download | |
 | kof95 | The King of Fighters '95 (NGM-084) | 1.14 MB 06-Aug-2022 Download | - | 5.81 MB 06-Aug-2022 Download | |
 | kof96 | The King of Fighters '96 (NGM-214) | 736 kB 06-Aug-2022 Download | - | 6.07 MB 06-Aug-2022 Download | |
 | kof97 | The King of Fighters '97 (NGM-2320) | 1.64 MB 06-Aug-2022 Download | - | 7.99 MB 06-Aug-2022 Download | |
 | kof98 | The King of Fighters '98 - The Slugfest / King of Fighters '98 - Dream Match Never Ends (NGM-2420) | 1.18 MB 06-Aug-2022 Download | - | 7.93 MB 06-Aug-2022 Download | |
 | kof99 | The King of Fighters '99 - Millennium Battle (NGM-2510) | 768 kB 06-Aug-2022 Download | - | 5.32 MB 06-Aug-2022 Download | |
| konam80s | Konami 80's AC Special (GC826 VER. EAA) | - | - | 348 kB 19-May-2023 Download | |
 | konamigt | Konami GT | - | - | 184 kB 06-Aug-2022 Download | |
 | konek | Konek-Gorbunok | 1.28 MB 06-Aug-2022 Download | - | 114 kB 06-Aug-2022 Download | |
| korokoro | Koro Koro Quest (Japan) | - | - | 167 kB 06-Aug-2022 Download | |
| koroleva | Snezhnaja Koroleva | - | - | 190 kB 06-Aug-2022 Download | |
 | koshien | Ah Eikou no Koshien (Japan) | - | - | 223 kB 06-Aug-2022 Download | |
 | kosmicmt | Kosmicheskiy most | - | 10.2 MB 06-Aug-2022 Download | - | |
| kosmicpt | Kosmicheskiy polyot | - | 4.82 MB 17-Sep-2023 Download | - | |
 | kosmokil | Kosmo Killer | - | - | 482 kB 06-Aug-2022 Download | |
 | kotm | King of the Monsters (set 1) | 778 kB 06-Aug-2022 Download | - | 3.06 MB 06-Aug-2022 Download | |
 | kotm2 | King of the Monsters 2 - The Next Thing (NGM-039 ~ NGH-039) | 712 kB 06-Aug-2022 Download | - | 3.06 MB 06-Aug-2022 Download | |
| kouyakyu | The Koukou Yakyuu | - | - | 241 kB 06-Aug-2022 Download | |
 | kov2 | Knights of Valour 2 / Sanguo Zhan Ji 2 / Sangoku Senki 2 (ver. 107, 102, 100HK) | 4.40 MB 06-Aug-2022 Download | - | 188 kB 06-Aug-2022 Download | |
| kov2p | Knights of Valour 2 Plus - Nine Dragons / Sanguo Zhan Ji 2 Qunxiong Zhengba / Sanguo Zhan Ji 2 Feilong Zai Tian / Sangoku Senki Busyou Souha (ver. M205XX, 200, 100CN) | - | - | 226 kB 06-Aug-2022 Download | |
| kov7sprt | Knights of Valour - The Seven Spirits | - | - | 377 kB 06-Aug-2022 Download | |
| kovplus | Knights of Valour Plus / Sanguo Zhan Ji Zhengzong Plus / Sangoku Senki Masamune Plus (ver. 119, set 1) | - | - | 168 kB 06-Aug-2022 Download | |
| kovshp | Knights of Valour Super Heroes Plus / Sanguo Zhan Ji Luanshi Xiaoxiong (ver. 101) | - | - | 215 kB 06-Aug-2022 Download | |
| kozure | Kozure Ookami (Japan) | - | - | 270 kB 06-Aug-2022 Download | |
 | kram | Kram (set 1) | 2.19 MB 06-Aug-2022 Download | - | 4.15 MB 06-Aug-2022 Download | |
 | kroozr | Kozmik Kroozr | 2.84 MB 06-Aug-2022 Download | - | 4.22 MB 06-Aug-2022 Download | |
 | krull | Krull | 1.22 MB 06-Aug-2022 Download | - | 3.32 MB 06-Aug-2022 Download | |
| krybolov | Kot-rybolov (Elektronika) | - | 5.19 MB 17-Sep-2023 Download | - | |
 | krzybowl | Krazy Bowl | - | - | 1.33 MB 06-Aug-2022 Download | |
| ksayakyu | Kusayakyuu | - | - | 202 kB 06-Aug-2022 Download | |
| kskatedie | Skate or Die (Konami, handheld) | - | 13.8 MB 17-Sep-2023 Download | - | |
| ktiger2 | Kyukyoku Tiger II (Ver 2.1J 1995/11/30) | - | - | 503 kB 06-Aug-2022 Download | |
 | ktmnt | Teenage Mutant Ninja Turtles (handheld) | - | 20.7 MB 17-Sep-2023 Download | - | |
| ktmnt2 | Teenage Mutant Ninja Turtles II: Splinter Speaks (handheld) | - | 12.3 MB 17-Sep-2023 Download | - | |
| ktmnt3 | Teenage Mutant Ninja Turtles 3: Shredder's Last Stand (handheld) | - | 11.2 MB 17-Sep-2023 Download | - | |
| ktmntbb | Teenage Mutant Ninja Turtles: Basketball | - | 9.75 MB 17-Sep-2023 Download | - | |
 | ktopgun | Top Gun (handheld) | - | 20.6 MB 17-Sep-2023 Download | - | |
| ktopgun2 | missing description | - | 13.4 MB 17-Sep-2023 Download | - | |
 | kungfum | Kung-Fu Master (World) | 1.37 MB 06-Aug-2022 Download | - | 4.02 MB 06-Aug-2022 Download | |
| kungfut | Kung-Fu Taikun (set 1) | - | - | 114 kB 06-Aug-2022 Download | |
 | kurikint | Kuri Kinton (World) | 1.15 MB 06-Aug-2022 Download | - | 83.5 kB 06-Aug-2022 Download | |
| kvakazad | Kvaka-zadavaka | - | 6.15 MB 17-Sep-2023 Download | - | |
| kyros | Kyros | - | - | 491 kB 06-Aug-2022 Download | |
| kyukaidk | Kyuukai Douchuuki (Japan, new version (Rev B)) | - | - | 202 kB 06-Aug-2022 Download | |
| kyustrkr | Last Striker / Kyuukyoku no Striker | - | - | 212 kB 06-Aug-2022 Download | |
