| Name | Description | Year | Manufacturer | Rom | Clone | Sample |
| kof99 | The King of Fighters '99 - Millennium Battle (NGM-2510) | 1999 | SNK | neogeo | | |
| kof99e | The King of Fighters '99 - Millennium Battle (earlier) | 1999 | SNK | kof99 | kof99 | |
| kof99h | The King of Fighters '99 - Millennium Battle (NGH-2510) | 1999 | SNK | kof99 | kof99 | |
| kof99k | The King of Fighters '99 - Millennium Battle (Korean release) | 1999 | SNK | kof99 | kof99 | |
| kof99ka | The King of Fighters '99 - Millennium Battle (Korean release, non-encrypted program) | 1999 | SNK | kof99 | kof99 | |
| kof99p | The King of Fighters '99 - Millennium Battle (prototype) | 1999 | SNK | kof99 | kof99 | |
| kofnw | The King of Fighters Neowave | 2004 | Sammy / SNK Playmore | awbios | | |
| kofnwj | The King of Fighters Neowave (Japan) | 2004 | Sammy / SNK Playmore | kofnw | kofnw | |
| kofskyst | KOF Sky Stage (v1.00J) | 2010 | Moss / SNK Playmore | | | |
| koftball | King of Football | 1995 | BMC | | | |
| kofxi | The King of Fighters XI | 2005 | Sammy / SNK Playmore | awbios | | |
| kofxii | The King of Fighters XII (v1.00) | 2009 | SNK Playmore | | | |
| kog | King of Gladiator (bootleg of The King of Fighters '97) | 1997 | bootleg | kof97 | kof97 | |
| kohinoor | Kohinoor (10136711, NSW/ACT) | 2003 | Aristocrat | aristmk6 | | |
| koikoi | Koi Koi Part 2 | 1982 | Kiwako | | | |
| koikois | Koi Koi Shimasho - Super Real Hanafuda | 1995 | Visco | | | |
| koikois2 | Koi Koi Shimasho 2 - Super Real Hanafuda (Japan) | 1997 | Visco | | | |
| koinomp | Mahjong Koi no Magic Potion (Japan) | 1992 | Nichibutsu | | | |
| kok | Povar / Sobrat' Buran / Agroprom (Arcade multi-game bootleg of ZX Spectrum 'Cookie', 'Jetpac' & 'Pssst') | 19?? | bootleg | | | |
| kokoroj | Soreike Kokology (Rev A) | 1992 | Sega | | | |
| kokoroj2 | Soreike Kokology Vol. 2 - Kokoro no Tanteikyoku | 1993 | Sega | | | |
| kokoroja | Soreike Kokology | 1992 | Sega | kokoroj | kokoroj | |
| kollon | Kollon (V2.04JA 2003/11/01 12:00) | 2003 | Taito | coh3002t | | |
| kollonc | Kollon (V2.04JC 2003/11/01 12:00) | 2003 | Taito | kollon | kollon | |
| komemokos | Komemokos (hack of 'Pac-Man (Cirsa, Spanish bootleg)') | 199? | hack | puckman | puckman | |
| komocomo | Komo Como (Topmar, bootleg?) | 1995 | bootleg | maddonna | maddonna | |
| konam80a | Konami 80's AC Special (GC826 VER. AAA) | 1998 | Konami | konam80s | konam80s | |
| konam80j | Konami 80's Gallery (GC826 VER. JAA) | 1998 | Konami | konam80s | konam80s | |
| konam80k | Konami 80's AC Special (GC826 VER. KAA) | 1998 | Konami | konam80s | konam80s | |
| konam80s | Konami 80's AC Special (GC826 VER. EAA) | 1998 | Konami | sys573 | | |
| konam80u | Konami 80's AC Special (GC826 VER. UAA) | 1998 | Konami | konam80s | konam80s | |
| konami_007452 | Konami 007452 math chip | | | | | |
| konami_cpu | KONAMI CPU | | | | | |
| konami_dual_pccard | Konami Dual PC Card Adapter (PWB0000085455) | | | | | |
| konami_gn676a_lan | Konami GN676-PWB(H)A Network PCB | | | | | |
| konami_gn676b_lan | Konami GN676-PWB(H)B Network PCB | | | | | |
| konami1 | KONAMI-1 | | | | | |
| konami88 | Konami '88 | 1988 | Konami | 88games | 88games | |
| konamigt | Konami GT | 1985 | Konami | | | |
| konamigv | Baby Phoenix/GV System | 1995 | Konami | | | |
| konamigx | System GX | 1994 | Konami | | | |
| konek | Konek-Gorbunok | 198? | Terminal | | | |
| konendev | Konami Endeavour BIOS | 200? | Konami | | | |
| kong | Kong (Donkey Kong conversion on Galaxian hardware) | 198? | Taito do Brasil | | | |
| kongball | Kong Ball (prototype) | 1997 | TCH / Digital Dreams Multimedia | | | |
| konhaji | Konnano Hajimete! (Japan) | 2001 | Nichibutsu/Love Factory | nichidvd | | |
| konin | Konin | 198? | Mera-Elzab | | | |
| konotako | Kono e Tako (10021 Ver.A) | 2003 | Mitchell | | | |
| konppc | Konami PowerPC Common Functions | | | | | |
| konppc_jvs_host | Konami JVS Host (PowerPC Common) | | | | | |
| kontest | Konami Test Board (GX800, Japan) | 1987? | Konami | | | |
| kontiki | KONTIKI 100 | 1984 | Kontiki Data A/S | | | |
| kontur | PK8020 Kontur | 1987 | <unknown> | korvet | korvet | |
| konzero | Zero (Konami Endeavour) | 200? | Konami | | | |
| kookabuk | Kooka Bucks (0100677V, NSW/ACT) | 1999 | Aristocrat | aristmk5 | | |
| kopunch | KO Punch | 1981 | Sega | | | |
| korg707 | 707 Performing Synthesizer | 1987 | Korg | | | |
| korgm1 | M1 Music Workstation (Rev 19) | 1988 | Korg | | | |
| korgm1ex | M1 EX Music Workstation (v1.29) | 1988 | Korg | korgm1 | korgm1 | |
| korgm1p1 | M1 Plus+1 Music Workstation | 1993 | InVision Interactive | korgm1 | korgm1 | |
| korgm1r | M1R Music Workstation (v1.06) | 1988 | Korg | korgm1 | korgm1 | |
| korgm1rex | M1R EX Music Workstation (v1.12) | 1988 | Korg | korgm1 | korgm1 | |
| korgwsad | WaveStation A/D | 1991 | Korg | | | |
| korgwsex | WaveStation EX | 1992 | Korg | | | |
| korgwssr | WaveStation SR | 1992 | Korg | | | |
| korgz3 | Z3 Guitar Synthesizer | 1988 | Korg | | | |
| korinai | Mahjong-zukino Korinai Menmen (Japan 880425) | 1988 | Nichibutsu | | | |
| korinaim | Mahjong-zukino Korinai Menmen (Japan 880920, medal) | 1988 | Nichibutsu | korinai | korinai | |
| korokoro | Koro Koro Quest (Japan) | 1999 | Takumi | | | |
| koroleva | Snezhnaja Koroleva | 198? | Terminal | | | |
| koropens | Korokoro Pensuke | 1997 | Konami | | | |
| korosuke | Korosuke Roller (Japan) | 1981 | Alpha Denshi Co. / Kural Electric, Ltd. | crush | crush | |
| korvet | PK8020 Korvet | 1987 | <unknown> | | | |
| koshien | Ah Eikou no Koshien (Japan) | 1990 | Taito Corporation | | | |
| kosmicmt | Kosmicheskiy most | 1989 | bootleg (Elektronika) | gnw_fire | gnw_fire | |
| kosmicpt | Kosmicheskiy polyot | 19?? | bootleg (Elektronika) | gnw_mmouse | gnw_mmouse | |
| kosmokil | Kosmo Killer | 1980? | bootleg (BEM) | kamikaze | kamikaze | invaders |
| kosteel | Kings of Steel | 1984 | Bally | | | genpin |
| kot | Kot-Rybolov (Terminal) | 198? | Terminal | | | |
| kotbinsp | Kkotbinyeo Special (Korea) | 1997 | Dynax / Shinwhajin | | | |
| kotbinyo | Kkotbinyeo (Korea) | 1997 | Dynax / Shinwhajin | hanakanz | hanakanz | |
| kotbinyosu | Speed Up / Kkotbinyeo (Korea) | 1997 | Dynax / Shinwhajin | hanakanz | hanakanz | |
| kotekita | Kotekitai Slot | 2001 | Sammy | sammymdl | | |
| kothello | Kyuukyoku no Othello | 1990 | Success | | | |
| kotm | King of the Monsters (set 1) | 1991 | SNK | neogeo | | |
| kotm2 | King of the Monsters 2 - The Next Thing (NGM-039 ~ NGH-039) | 1992 | SNK | neogeo | | |
| kotm2a | King of the Monsters 2 - The Next Thing (older) | 1992 | SNK | kotm2 | kotm2 | |
| kotm2p | King of the Monsters 2 - The Next Thing (prototype) | 1992 | SNK | kotm2 | kotm2 | |
| kotmh | King of the Monsters (set 2) | 1991 | SNK | kotm | kotm | |
| kouyakyu | The Koukou Yakyuu | 1985 | Alpha Denshi Co. | | | equites |
| kov | Knights of Valour / Sanguo Zhan Ji / Sangoku Senki (ver. 117, Hong Kong) | 1999 | IGS | pgm | | |
| kov111 | Knights of Valour / Sanguo Zhan Ji / Sangoku Senki (ver. 111, Japanese Board) | 1999 | IGS | kov | kov | |
| kov114 | Knights of Valour / Sanguo Zhan Ji / Sangoku Senki (ver. 114, Hong Kong) | 1999 | IGS | kov | kov | |
| kov115 | Knights of Valour / Sanguo Zhan Ji / Sangoku Senki (ver. 115) | 1999 | IGS | kov | kov | |
| kov2 | Knights of Valour 2 / Sanguo Zhan Ji 2 / Sangoku Senki 2 (ver. 107, 102, 100HK) | 2000 | IGS | pgm | | |
| kov2100 | Knights of Valour 2 / Sanguo Zhan Ji 2 / Sangoku Senki 2 (ver. 100, 100, 100HK) | 2000 | IGS | kov2 | kov2 | |
| kov2101 | Knights of Valour 2 / Sanguo Zhan Ji 2 / Sangoku Senki 2 (ver. 101, 101, 100HK) | 2000 | IGS | kov2 | kov2 | |
| kov2102 | Knights of Valour 2 / Sanguo Zhan Ji 2 / Sangoku Senki 2 (ver. 102, 101, 100HK) | 2000 | IGS | kov2 | kov2 | |
| kov21022 | Knights of Valour 2 / Sanguo Zhan Ji 2 / Sangoku Senki 2 (ver. 102, 102, 100HK) | 2000 | IGS | kov2 | kov2 | |
| kov2103 | Knights of Valour 2 / Sanguo Zhan Ji 2 / Sangoku Senki 2 (ver. 103, 101, 100HK) | 2000 | IGS | kov2 | kov2 | |
| kov2104 | Knights of Valour 2 / Sanguo Zhan Ji 2 / Sangoku Senki 2 (ver. 104, 102, 100HK) | 2000 | IGS | kov2 | kov2 | |
| kov2106 | Knights of Valour 2 / Sanguo Zhan Ji 2 / Sangoku Senki 2 (ver. 106, 102, 100HK) | 2000 | IGS | kov2 | kov2 | |
| kov2nl | Knights of Valour 2 New Legend / Sanguo Zhan Ji 2 Guang Sao Yu Jun (V302, Oversea) | 2008 | IGS | | | |
| kov2nl_300 | Knights of Valour 2 New Legend / Sanguo Zhan Ji 2 Guang Sao Yu Jun (V300, Oversea) | 2008 | IGS | kov2nl | kov2nl | |
| kov2nl_300cn | Sanguo Zhan Ji 2 Gaishi Yingxiong (V300, China) | 2008 | IGS (Huatong license) | kov2nl | kov2nl | |
| kov2nl_301 | Knights of Valour 2 New Legend / Sanguo Zhan Ji 2 Guang Sao Yu Jun (V301, Oversea) | 2008 | IGS | kov2nl | kov2nl | |
| kov2nl_301cn | Sanguo Zhan Ji 2 Gaishi Yingxiong (V301, China) | 2008 | IGS (Huatong license) | kov2nl | kov2nl | |
| kov2nl_302cn | Sanguo Zhan Ji 2 Gaishi Yingxiong (V302, China) | 2008 | IGS (Huatong license) | kov2nl | kov2nl | |
| 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) | 2001 | IGS | pgm | | |
| kov2p200 | 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. M200XX, 200, 100CN) | 2001 | IGS | kov2p | kov2p | |
| kov2p202 | 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. M202XX, 200, 100CN) | 2001 | IGS | kov2p | kov2p | |
| kov2p203 | 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. M203XX, 200, 100CN) | 2001 | IGS | kov2p | kov2p | |
| kov2p204 | 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. M204XX, 200, 100CN) | 2001 | IGS | kov2p | kov2p | |
| kov3 | Knights of Valour 3 / Sanguo Zhan Ji 3 (V104, China, Hong Kong, Taiwan) | 2011 | IGS (Huatong license) | | | |
| kov3_100 | Knights of Valour 3 / Sanguo Zhan Ji 3 (V100, China, Hong Kong, Taiwan) | 2011 | IGS (Huatong license) | kov3 | kov3 | |
| kov3_101 | Knights of Valour 3 / Sanguo Zhan Ji 3 (V101, China, Hong Kong, Taiwan) | 2011 | IGS (Huatong license) | kov3 | kov3 | |
| kov3_102 | Knights of Valour 3 / Sanguo Zhan Ji 3 (V102, China, Hong Kong, Taiwan) | 2011 | IGS (Huatong license) | kov3 | kov3 | |
| kov3hd | Knights of Valour 3 HD (M-105CN 13-07-04 18:54:01) | 2011 | IGS | | | |
| kov3hd101 | Knights of Valour 3 HD (V101) | 2011 | IGS | kov3hd | kov3hd | |
| kov3hd102 | Knights of Valour 3 HD (V102) | 2011 | IGS | kov3hd | kov3hd | |
| kov3hd103 | Knights of Valour 3 HD (V103) | 2011 | IGS | kov3hd | kov3hd | |
| kov3hd104 | Knights of Valour 3 HD (V104) | 2011 | IGS | kov3hd | kov3hd | |
| kov7sprt | Knights of Valour - The Seven Spirits | 2003 | IGS / Sammy | awbios | | |
| kovgsyx | Gaishi Xingxiong Tebie Ban (bootleg of Knights of Valour Super Heroes Plus, V302CN, Dec 29 2010 16:31:32) | 2010 | bootleg (WDF) | kovshp | kovshp | |
| kovlsjb | Luanshi Jie Ba (bootleg of Knights of Valour Super Heroes Plus, ver. 200CN, set 1) | 200? | bootleg | kovshp | kovshp | |
| kovlsjba | Luanshi Jie Ba (bootleg of Knights of Valour Super Heroes Plus, ver. 200CN, set 2) | 200? | bootleg | kovshp | kovshp | |
| kovlsqh | Luanshi Quanhuang (bootleg of Knights of Valour Super Heroes Plus, ver. 200CN) | 200? | bootleg | kovshp | kovshp | |
| kovlsqh2 | Luanshi Quanhuang 2 (bootleg of Knights of Valour Super Heroes Plus, ver. 200CN) | 200? | bootleg | kovshp | kovshp | |
| kovplus | Knights of Valour Plus / Sanguo Zhan Ji Zhengzong Plus / Sangoku Senki Masamune Plus (ver. 119, set 1) | 1999 | IGS | pgm | | |
| kovplusa | Knights of Valour Plus / Sanguo Zhan Ji Zhengzong Plus / Sangoku Senki Masamune Plus (ver. 119, set 2) | 1999 | IGS | kovplus | kovplus | |
| kovqhsgs | Quanhuang Sanguo Tebie Ban (bootleg of Knights of Valour Super Heroes, V303CN, Nov 21 2008 19:03:49) | 2008 | bootleg (WDF) | kovsh | kovsh | |
| kovsgqyz | Sanguo Qunying Zhuan Zhengzong Plus (bootleg of Knights of Valour Plus, set 1) | 1999 | bootleg | kovplus | kovplus | |
| kovsgqyza | Sanguo Qunying Zhuan Zhengzong Plus (bootleg of Knights of Valour Plus, set 2) | 1999 | bootleg | kovplus | kovplus | |
| kovsgqyzb | Sanguo Qunying Zhuan Zhengzong Plus (bootleg of Knights of Valour Plus, set 3) | 1999 | bootleg | kovplus | kovplus | |
| kovsh | Knights of Valour Super Heroes / Sanguo Zhan Ji Fengyun Zaiqi / Sangoku Senki Super Heroes (ver. 104, CN) | 1999 | IGS | pgm | | |
| kovsh100 | Knights of Valour Super Heroes / Sanguo Zhan Ji Fengyun Zaiqi / Sangoku Senki Super Heroes (ver. 100, CN) | 1999 | IGS | kovsh | kovsh | |
| kovsh101 | Knights of Valour Super Heroes / Sanguo Zhan Ji Fengyun Zaiqi / Sangoku Senki Super Heroes (ver. 101, CN) | 1999 | IGS | kovsh | kovsh | |
| kovsh102 | Knights of Valour Super Heroes / Sanguo Zhan Ji Fengyun Zaiqi / Sangoku Senki Super Heroes (ver. 102, CN) | 1999 | IGS | kovsh | kovsh | |
| kovsh103 | Knights of Valour Super Heroes / Sanguo Zhan Ji Fengyun Zaiqi / Sangoku Senki Super Heroes (ver. 103, CN) | 1999 | IGS | kovsh | kovsh | |
| kovshp | Knights of Valour Super Heroes Plus / Sanguo Zhan Ji Luanshi Xiaoxiong (ver. 101) | 2004 | IGS | pgm | | |
| kovshp100 | Knights of Valour Super Heroes Plus / Sanguo Zhan Ji Luanshi Xiaoxiong (ver. 100) | 2004 | IGS | kovshp | kovshp | |
| kovshxas | Aoshi Sanguo (bootleg of Knights of Valour Super Heroes Plus, V202CN, Oct 6 2008 09:59:26) | 2008 | bootleg | kovshp | kovshp | |
| kovytzy | Knights of Valour Super Heroes / Sanguo Zhan Ji Fengyun Zaiqi / Sangoku Senki Super Heroes (SANGO EX+) (ver. 201 'Yitong Zhongyuan', China) | 1999 | IGS | pgm | | |
| kozure | Kozure Ookami (Japan) | 1987 | Nichibutsu | | | |
| kp63_3channel | Kawasaki Steel KP63 Timer/Counter (3 channels) | | | | | |
| kp63a | Kawasaki Steel KP63A Timer/Counter | | | | | |
| kp64 | Kawasaki Steel KP64 Timer/Counter | | | | | |
| kp69 | Kawasaki Steel KP69 Interrupt Controller | | | | | |
| kpchess | Kasparov Pocket Chess | 1985 | SciSys / Heuristic Software | electrio | electrio | |
| kpontoon | Pontoon (Konami) | 1993 | Konami | | | |
| kpplus | Kasparov Pocket Plus | 1986 | SciSys / Heuristic Software | mk12 | mk12 | |
| kpv106 | Kingpin (Pinball) | 1996 | Capcom | | | |
| kpython | Konami Python BIOS | 2002 | Konami | | | |
| kpython2 | Konami Python 2 BIOS | 2005 | Konami | | | |
| kr03 | KR-03 | 1986 | Elektronika | radio86 | radio86 | |
| kr1601rr1 | KR1601RR1 EAROM | | | | | |
| kr1818vg93 | KR1818VG93 FDC | | | | | |
| kr2376_12 | SMC KR2376-12 Keyboard Encoder | | | | | |
| kr2376_st | SMC KR2376-ST Keyboard Encoder | | | | | |
| kram | Kram (rev 1) | 1982 | Taito America Corporation | | | |
| krama | Kram | 1982 | Taito America Corporation | kram | kram | |
| krame | Kram (encrypted) | 1982 | Taito America Corporation | kram | kram | |
| kramermc | Kramer MC | 1987 | Manfred Kramer | | | |
| krampcb2 | Draw Poker HI-LO (bootleg, set 1) | 1983 | bootleg | | | |
| krampcb3 | unknown Kramer Poker (pcb3, encrypted) | 198? | M.Kramer Manufacturing. | | | |
| krampcb4 | unknown Kramer Poker (pcb4, encrypted) | 198? | M.Kramer Manufacturing. | | | |
| krampcb5 | Draw Poker HI-LO (bootleg, set 2) | 198? | bootleg | krampcb2 | krampcb2 | |
| krampcb6 | unknown Kramer Poker (pcb6, encrypted) | 198? | M.Kramer Manufacturing. | | | |
| krista2 | Krista-2 | 1987 | <unknown> | vector06 | vector06 | |
| kristall2 | Kristall-2 | 1987 | <unknown> | mikro80 | mikro80 | |
| krokha | Krokha | 1990 | SKB Kontur | | | |
| kron180 | Kron K-180 | 1995 | Kron Ltd | | | |
| kroozr | Kozmik Kroozr | 1982 | Bally Midway | | | |
| krull | Krull | 1983 | Gottlieb | | | |
| krullp | Krull (Pinball) | 1983 | Gottlieb | | | genpin |
| krvnjvtv | OC Jeu Video TV Karvan | 1979 | SOE | | | |
| krybolov | Kot-rybolov (Elektronika) | 1989 | bootleg (Elektronika) | gnw_mmouse | gnw_mmouse | |
| krzybowl | Krazy Bowl | 1994 | American Sammy | | | |
| ks0066 | Samsung KS0066 LCD Controller | | | hd44780 | | |
| ks0164 | Samsung KS0164 Wavetable Synthesizer | | | | | |
| ks0164cpu | Samsung KS0164 audio processor | | | | | |
| ks32 | KS-32 | 1992 | Ensoniq | sq2 | sq2 | |
| ksayakyu | Kusayakyuu | 1985 | Taito Corporation | | | |
| kskatedie | Skate or Die (Konami, handheld) | 1989 | Konami | | | |
| ksp10 | KSP10 Digital Piano | 199? | Kawai Musical Instruments Manufacturing | | | |
| kst25 | Star Trek: 25th Anniversary (handheld) | 1991 | Konami | | | kst25 |
| kt216wb5 | KT216WB5-HI Rev.2 | 19?? | KT Technology | ibm5170 | ibm5170 | |
| kt76 | KT-76 | 1996 | Ensoniq | | | |
| ktiger | Kyukyoku Tiger (Japan, 2 player cooperative) | 1989 | Toaplan / Taito Corporation | twincobr | twincobr | |
| ktiger2 | Kyukyoku Tiger II (Ver 2.1J 1995/11/30) | 1995 | Taito Corporation | tcobra2 | tcobra2 | |
| ktigera | Kyukyoku Tiger (Japan, 2 player alternate) | 1987 | Toaplan / Taito Corporation | twincobr | twincobr | |
| ktm3 | KTM-3 | 1980 | Synertek Systems | | | |
| ktmnt | Teenage Mutant Ninja Turtles (handheld) | 1989 | Konami | | | |
| ktmnt2 | Teenage Mutant Ninja Turtles II: Splinter Speaks (handheld) | 1990 | Konami | | | ktmnt2 |
| ktmnt3 | Teenage Mutant Ninja Turtles 3: Shredder's Last Stand (handheld) | 1991 | Konami | | | |
| ktmntbb | Teenage Mutant Ninja Turtles: Basketball | 1991 | Konami | | | |
| ktopgun | Top Gun (handheld) | 1989 | Konami | | | |
| ktopgun2 | Top Gun: Second Mission (handheld) | 1991 | Konami | | | ktopgun2 |
| ktparman | Kiteyo Parman | 1983 | Bandai | | | |
| ktx20t02 | QTC-SXM KT X20T02/HI Rev.3 | 198? | Quadtel | ibm5170 | ibm5170 | |
| kuhga | Kuhga - Operation Code 'Vapor Trail' (Japan revision 3) | 1989 | Data East Corporation | vaportra | vaportra | |
| kungfu | Kung Fu Fighters (IGS, v202N) | 1992 | IGS | | | |
| kungfua | Kung Fu Fighters (IGS, v100) | 1992 | IGS | kungfu | kungfu | |
| kungfub | Kung-Fu Master (bootleg set 1) | 1984 | bootleg | kungfum | kungfum | |
| kungfub2 | Kung-Fu Master (bootleg set 2) | 1984 | bootleg | kungfum | kungfum | |
| kungfub3s | Kung-Fu Senjyo (bootleg, Spanish) | 1984 | bootleg | kungfum | kungfum | |
| kungfum | Kung-Fu Master (World) | 1984 | Irem | | | |
| kungfumd | Kung-Fu Master (US) | 1984 | Irem (Data East USA license) | kungfum | kungfum | |
| kungfur | Kung-Fu Roushi | 1987 | Namco | | | |
| kungfut | Kung-Fu Taikun (set 1) | 1984 | Seibu Kaihatsu | | | |
| kungfuta | Kung-Fu Taikun (set 2) | 1984 | Seibu Kaihatsu | kungfut | kungfut | |
| kuniokun | Nekketsu Kouha Kunio-kun (Japan) | 1986 | Technos Japan | renegade | renegade | |
| kuniokunb | Nekketsu Kouha Kunio-kun (Japan bootleg) | 1986 | bootleg | renegade | renegade | |
| kurdart | Kursaal Darts | 199? | K7 Kursaal | | | |
| kurikint | Kuri Kinton (World) | 1988 | Taito Corporation Japan | | | |
| kurikinta | Kuri Kinton (World, prototype?) | 1988 | Taito Corporation Japan | kurikint | kurikint | |
| kurikintj | Kuri Kinton (Japan) | 1988 | Taito Corporation | kurikint | kurikint | |
| kurikintu | Kuri Kinton (US) | 1988 | Taito America Corporation | kurikint | kurikint | |
| kurikintw | Kuri Kinton (US, World Games license) | 1988 | Taito Corporation (World Games, Inc. license) | kurikint | kurikint | |
| kurucham | Kurukuru Chameleon (Japan) (GDL-0034) | 2006 | Able | naomigd | | |
| kurufev | Kurukuru Fever | 2003 | Aruze / Takumi | aleck64 | | |
| kurukuru | Kuru Kuru Pyon Pyon (Japan) | 1990 | Success / Taiyo Jidoki | | | |
| kuzmich | Kuzmich-Egorych | 199? | Nippel | | | |
| kvakazad | Kvaka-zadavaka | 1989 | bootleg (Elektronika) | gnw_mmouse | gnw_mmouse | |
| kviper | Konami Viper BIOS | 1999 | Konami | | | |
| ky80 | Taxan KY-80 | | | | | |
| kyhaton | Keep Your Hat On (BHG1204, US) | 2000 | Aristocrat | bparty | bparty | |
| kyoxt | XT | 198? | Kyocera | ibm5150 | ibm5150 | |
| kyros | Kyros | 1987 | Alpha Denshi Co. (World Games Inc. license) | | | |
| kyrosj | Kyros no Yakata (Japan) | 1986 | Alpha Denshi Co. | kyros | kyros | |
| kyuhito | Kyukyoku no Hito (Japan 880824) | 1988 | Roller Tron | kanatuen | kanatuen | |
| kyukaidk | Kyuukai Douchuuki (Japan, new version (Rev B)) | 1990 | Namco | | | |
| kyukaidko | Kyuukai Douchuuki (Japan, old version) | 1990 | Namco | kyukaidk | kyukaidk | |
| kyustrkr | Last Striker / Kyuukyoku no Striker | 1989 | East Technology | | | |
| kz26 | KZ-26 | 1984 | Playmatic | | | genpin |
| kzaurus | Pittanko Zaurus | 1995 | Konami | | | |
| l2800 | Rockwell L2800 MCU | | | | | |
| l7a1045 | L7A1045 L6028 DSP-A | | | | | |
| l9nibble | Lucky 9 | 19?? | Nibble | | | |
| la120 | DECwriter III (LA120) | 1978 | Digital Equipment Corporation | | | |
| labrinth | Labyrinth (Ver 1.5) | 2001 | Nazionale Elettronica | | | |
| labtam | 3006 | 1983 | Labtam International | | | |
| labtam_3232 | Labtam 3232 | | | | | |
| labtam_8086cpu | Labtam 8086 CPU | | | | | |
| labtam_vducom | Labtam 8086 VDU COMM | | | | | |
| labtam_z80sbc | Labtam Z80 SBC | | | | | |
| labyrunr | Labyrinth Runner (Japan) | 1987 | Konami | tricktrp | tricktrp | |
| labyrunrf | Labyrinth Runner (World Ver. F) | 1987 | Konami | tricktrp | tricktrp | |
| labyrunrk | Labyrinth Runner (World Ver. K) | 1987 | Konami | tricktrp | tricktrp | |
| lacrazyc | Let's Attack Crazy Cross (GV027 Asia 1.10) | 1996 | Konami | konamigv | | |