| Konami Classics Series: Arcade Hits (2007) | 203,601 | 94 |
| Konami GT (1985) | 0 | 0 |
| Konami Hyper Soccer (1992) | 179,553 | 108 |
| Konami Kids Playground: Alphabet Circus (2007) | 2,240 | 3 |
| Konami Krazy Racers (2001) | 1,003,288 | 587 |
| Konami Yu-Gi-oh! GX The Beginning of Destiny (2006) | 0 | 0 |
| Konami Zone of The Enders (2018) | 21,119 | 121 |
| Konami's Open Golf Championship (1994) | 2,739 | 8 |
| Konami's Ping Pong (1985) | 679,566 | 176 |
| Konami's Soccer (1985) | 17,325 | 48 |
| Konamic Tennis (1988) | 2,073 | 2 |
| Konchuu Hakase (1998) | 1,942 | 6 |
| Konductra (2006) | 1,135 | 5 |
| Konfronto (2025) | 88,534 | 4 |
| Kong (1983) | 308,862 | 39 |
| Kong Hero (2023) | 2,071 | 12 |
| Kong Strikes Back! (1984) | 23,102 | 33 |
| Kong's Revenge (1991) | 40,743 | 28 |
| Kong: King of Atlantis (2005) | 42,631 | 55 |
| Kong: The 8th Wonder of the World (2005) | 223,671 | 145 |
| Konjiki no Gash Bell!! Go! Go! Mamono Fight!! (2005) | 96,802 | 90 |
| Konkwest (2024) | 79,214 | 5 |
| Konohana 2: Todokanai Requiem (2002) | 6,023 | 18 |
| Konohana: True Report (2001) | 18,500 | 40 |
| KONOSUBA! VR (2019) | 148,048 | 73 |
| Konrad the Rocket (2017) | 0 | 0 |
| Konrad's Kittens (2016) | 90,544 | 73 |
| KONSAIRI (2020) | 3,084 | 5 |
| KONSUI FIGHTER (2024) | 24,618 | 24 |
| Kontrakt (2018) | 335,362 | 39 |
| Konung 2: Blood of Titans (2004) | 66,049 | 252 |
| Konung III: Ties of the Dynasty (2010) | 102,608 | 70 |
| Konung: Legends of the North (1999) | 780,278 | 316 |
| Konung: Legends of the North (2000) | 20,562 | 20 |
| Koo & Yuu (2019) | 70 | 2 |
| Kooky Kids Fort Defense (2024) | 87 | 6 |
| Kool-Aid Man (1983) | 4,392,980 | 198 |
| Kooring VR Coding Adventure (2020) | 344 | 6 |
| Kopanito All-Stars Soccer (2016) | 2,497,205 | 437 |
| Koppun-50 (2024) | 9 | 1 |
| Koral (2019) | 3,922,458 | 207 |
| The Kore Gang (2010) | 211,603 | 174 |
| Korea: Forgotten Conflict (2003) | 29,616 | 37 |
| Korean BBQ Simulator (2022) | 5,053 | 7 |
| KORG DS-10 (2008) | 0 | 0 |
| KORG DS-10 PLUS (2009) | 397,082 | 23 |
| KORG DS-10 Synthesizer (2008) | 231,615 | 38 |
| KORG Gadget VR (2023) | 0 | 0 |
| Korga's Arena (2024) | 32 | 1 |
| Korgan (2018) | 89,563 | 79 |
| Kori's Fable Visual Novel (2023) | 0 | 0 |
| Korlax Escape! (2023) | 0 | 0 |
| Koro Koro Puzzle Happy Panechu! (2002) | 47,999 | 17 |
| Korogashi Puzzle Katamari Damacy (2009) | 65,165 | 58 |
| KoroNeko (2024) | 10,697 | 11 |
| Koronis Rift (1985) | 34,905 | 34 |
| Kororinpa (2006) | 276,636 | 357 |
| Korter 1996 (2025) | 562 | 6 |
| Kortstrid (2023) | 74 | 3 |
| Korvae in space (2017) | 0 | 0 |
| Kosmic Kanga (1984) | 7,357 | 12 |
| Kosmic Pirate (1983) | 41 | 2 |
| Kosmo Laika : Guide to Space (2021) | 7 | 1 |
| Kosmo Laika: Space and Beyond (2021) | 8 | 1 |
| Kosmo Skirmish (2024) | 0 | 0 |
| Kosmo Spin (2010) | 75,445 | 9 |
| Kosmokrats (2020) | 376,467 | 280 |
| Kosmos Connections (2021) | 2,202 | 12 |
| Kosodate Quiz: Motto My Angel (1999) | 1,048,183 | 176 |
| Kosodate Quiz: My Angel (1996) | 194,065 | 157 |
| Kosodate Quiz: My Angel 2 (1997) | 15,825 | 26 |
| Kosodate Quiz: My Angel 3 (1998) | 11,620 | 20 |
| Kotel Ne Gori: A Friend of Lena Boots (2020) | 4,949 | 18 |
| KóterGame (2018) | 233 | 1 |
| Koto Battle: Tengai no Moribito (2001) | 22,524 | 49 |
