| Kong (1983) | 161,043 | 29 |
| Kong Hero (2023) | 4,527 | 19 |
| Kong Strikes Back! (1984) | 23,146 | 39 |
| Kong's Revenge (1991) | 16,047 | 23 |
| Kong: King of Atlantis (2005) | 30,765 | 43 |
| Kong: The 8th Wonder of the World (2005) | 125,414 | 76 |
| Konjiki no Gash Bell!! Go! Go! Mamono Fight!! (2005) | 67,779 | 48 |
| Konkwest (2024) | 0 | 0 |
| Konohana 2: Todokanai Requiem (2002) | 837 | 12 |
| Konohana: True Report (2001) | 5,502 | 32 |
| KONOSUBA! VR (2019) | 241,751 | 82 |
| Konrad's Kittens (2016) | 97,674 | 87 |
| KONSAIRI (2020) | 2,586 | 15 |
| Kontrakt (2018) | 378,595 | 79 |
| Konung 2: Blood of Titans (2004) | 68,461 | 246 |
| Konung III: Ties of the Dynasty (2010) | 103,889 | 65 |
| Konung: Legends of the North (1999) | 839,451 | 350 |
| Konung: Legends of the North (2000) | 809 | 4 |
| Koo & Yuu (2019) | 70 | 2 |
| Kool-Aid Man (1983) | 4,627,525 | 278 |
| Kooring VR Coding Adventure (2020) | 344 | 6 |
| Kopanito All-Stars Soccer (2016) | 1,247,924 | 357 |
| Koral (2019) | 13,778,955 | 260 |
| The Kore Gang (2010) | 0 | 0 |
| Korea: Forgotten Conflict (2003) | 29,773 | 38 |
| Korean BBQ Simulator (2022) | 4,911 | 5 |
| KORG DS-10 (2008) | 260,857 | 104 |
| KORG DS-10 PLUS (2009) | 293,781 | 10 |
| KORG DS-10 Synthesizer (2008) | 77 | 2 |
| KORG Gadget VR (2023) | 0 | 0 |
| Korgan (2018) | 103,239 | 93 |
| Kori's Fable Visual Novel (2023) | 0 | 0 |
| Koro Koro Puzzle Happy Panechu! (2002) | 62,775 | 19 |
| Korogashi Puzzle Katamari Damacy (2009) | 18,687 | 55 |
| KoroNeko (2024) | 0 | 0 |
| Koronis Rift (1985) | 32,462 | 35 |
| Kororinpa (2006) | 270,019 | 345 |
| Kortstrid (2023) | 47 | 1 |
| Kosmic Kanga (1984) | 7,360 | 15 |
| Kosmic Pirate (1983) | 42 | 3 |
| Kosmo Laika : Guide to Space (2021) | 0 | 0 |
| Kosmo Laika: Space and Beyond (2021) | 0 | 0 |
| Kosmo Spin (2010) | 80,377 | 10 |
| Kosmokrats (2020) | 369,930 | 275 |
| Kosmos Connections (2021) | 1,761 | 9 |
| Kosodate Quiz: Motto My Angel (1999) | 1,055,064 | 174 |
| Kosodate Quiz: My Angel (1996) | 198,679 | 159 |
| Kosodate Quiz: My Angel 2 (1997) | 3,700 | 14 |
| Kosodate Quiz: My Angel 3 (1998) | 888 | 8 |
| Kotel Ne Gori: A Friend of Lena Boots (2020) | 4,596 | 16 |
| KóterGame (2018) | 252 | 3 |
| Koto Battle: Tengai no Moribito (2001) | 17,479 | 52 |
| Kotoba no Puzzle Mojipittan Advance (2003) | 761 | 6 |
| Kotoba no Puzzle Mojipittan Daijiten (2004) | 26,672 | 52 |
| Kotoba no Puzzle: Moji Pittan Encore (2020) | 2,262,904 | 190 |
| Kotoba no Puzzle: Mojipittan (2003) | 181,864 | 35 |
| Kotoba no Puzzle: Mojipittan Wii Deluxe (2008) | 31,633 | 5 |
| Kotodama Diary (2020) | 20,060 | 36 |
| Kotodama: The 7 Mysteries of Fujisawa (2019) | 250,680 | 465 |
| The Kotonoha Sisters and the Legend of Lysant Island (2021) | 1,315 | 6 |
| Kou-Kyou-Sei Million Arthur (2018) | 241,074 | 48 |
| Kouashi Kikou Shidan: Bein Panzer (2000) | 45,289 | 3 |
| Koudelka (1999) | 3,043,350 | 3,523 |
| Koufuku wo Yobu Game: Dora Dora Dora (1991) | 0 | 0 |
| Koumajou Densetsu II: Stranger's Requiem (2010) | 1,978,140 | 584 |
| Koumajou Densetsu: Scarlet Symphony (2009) | 2,112,931 | 1,045 |
| Koumajou Remilia: Scarlet Symphony (2022) | 566,182 | 671 |
| Kousoku Card Battle: Card Hero (2007) | 67,228 | 47 |
| Kousoku Shikou Shogi-Oh (1995) | 2 | 1 |
| Koutetsu no Kishi (1991) | 104,806 | 60 |
| Koutetsu no Kishi 2: Sabaku no Rommel Shougun (1994) | 15,688 | 6 |
| Koutetsu no Kishi 3: Gekitotsu Europe Sensen (1995) | 383 | 5 |
| Koutetsu Yousai Strahl (1992) | 95,425 | 83 |
| Koutetsujou no Kabaneri -Ran- Hajimaru Kiseki (2018) | 951 | 4 |
| KovaaK 2.0 (2018) | 2,049,082 | 865 |
