| KAKU: Ancient Seal (2023) | 707,711 | 1,371 |
| KAKUDO (2022) | 1,119 | 12 |
| Kakurasu World (2020) | 474 | 3 |
| Kakurenbo Battle Monster Tactics (2000) | 80,843 | 87 |
| Kakuro Magic (2020) | 148 | 4 |
| Kakuto Chojin: Back Alley Brutal (2002) | 289,797 | 254 |
| Kal Online (2004) | 1,425,427 | 971 |
| Kalaban (2016) | 7,583,554 | 504 |
| Kaleido Chaos (2018) | 0 | 0 |
| KALEIDO STELLA (2019) | 170,074 | 37 |
| Kalimba (2014) | 36,617,499 | 2,059 |
| Kalin no Tsurugi (1987) | 87,572 | 62 |
| Kalinur (2022) | 27,615 | 109 |
| KALPA: Cosmic Symphony (2024) | 142,233 | 237 |
| Kalyzmyr (2022) | 186 | 4 |
| Kamaeru: A Frog Refuge (2024) | 141,286 | 181 |
| Kamaitachi no Yoru (1994) | 17,664,025 | 1,710 |
| Kamen Rider 555 (2003) | 9,426,518 | 779 |
| Kamen Rider Battle Ganbaride Card Battle Taisen (2010) | 8,867 | 44 |
| Kamen Rider Battle: Ganbaride (2008) | 914,066 | 607 |
| Kamen Rider Blade (2004) | 10,153,121 | 856 |
| Kamen Rider Climax Scramble Zi-O (2018) | 6,171,252 | 837 |
| Kamen Rider Dragon Knight (2009) | 1,548,862 | 291 |
| Kamen Rider Kabuto (2006) | 17,634,581 | 1,936 |
| Kamen Rider SD: Shutsugeki!! Rider Machine (1993) | 106,498 | 76 |
| Kamen Rider: Battride War (2013) | 24,647,008 | 1,157 |
| Kamen Rider: Battride War Genesis (2016) | 33,171,314 | 4,664 |
| Kamen Rider: Battride War II (2014) | 25,233,725 | 1,358 |
| Kamen Rider: City Wars (2017) | 6,471,629 | 2,738 |
| Kamen Rider: Climax Fighters (2017) | 20,877,870 | 2,605 |
| Kamen Rider: Climax Heroes (2009) | 8,161,562 | 1,574 |
| Kamen Rider: Climax Heroes Fourze (2011) | 1,617,217 | 703 |
| Kamen Rider: Climax Heroes OOO (2010) | 6,201,960 | 554 |
| Kamen Rider: Climax Heroes W (2009) | 132,658 | 83 |
| Kamen Rider: Climax Scramble (2018) | 2,984,853 | 715 |
| Kamen Rider: Dragon Knight (2009) | 761,122 | 275 |
| Kamen Rider: Memory of Heroez (2020) | 10,090,861 | 2,995 |
| Kamen Rider: SummonRide (2014) | 170,570 | 67 |
| Kamen Rider: Super Climax Heroes (2012) | 26,535,936 | 6,527 |
| Kameo (2005) | 1,800,770 | 579 |
| Kameo: Elements of Power (2005) | 6,816,254 | 2,584 |
| KAMI 2 (2017) | 5,928,764 | 3,450 |
| Kami-sama's Personal Servant (2024) | 0 | 0 |
| KAMiBAKO - Mythology of Cube (2025) | 18,586 | 81 |
| KamiCrazy (2008) | 0 | 0 |
| Kamifuda (2022) | 3,831 | 59 |
| Kamigami no Asobi (2013) | 114,631 | 150 |
| Kamigami: Clash of the Gods (2022) | 9,456 | 38 |
| Kamikaze Cube 2 (2018) | 15,004 | 3 |
| Kamikaze Empire (2024) | 164 | 2 |
| Kamikaze Lassplanes (2024) | 33,615 | 45 |
| Kamikaze Veggies (2021) | 223,932 | 222 |
| Kamiko (2017) | 2,134,893 | 879 |
| Kamile VR (2019) | 711 | 3 |
| KAMITSUBAKI CITY ENSEMBLE (2024) | 29,577 | 32 |
| KAMITSUBAKI CITY REGENERATE (2025) | 2,928 | 7 |
| Kamiwaza (2006) | 341,688 | 646 |
| Kamiwaza: Way of the Thief (2022) | 555,729 | 264 |
| Kampfgruppe (1985) | 32,022 | 21 |
| Kamyla and the Scarlet Mage (2024) | 0 | 0 |
| Kan Colle Kai (2016) | 163,012 | 207 |
| Kana Quest (2020) | 28,132 | 43 |
| Kanamono (2021) | 373 | 7 |
| Kanarasu To: Center Heroes (2014) | 0 | 0 |
| Kandagawa Jet Girls (2020) | 1,104,362 | 2,281 |
| Kandria (2023) | 56,388 | 131 |
| Kandume Monsters Parfait (1999) | 0 | 0 |
| Kane & Lynch 2: Dog Days (2010) | 14,947,154 | 6,355 |
| Kane and Lynch: Dead Men (2007) | 5,133,014 | 2,067 |
| Kang Fu (1996) | 224,867 | 21 |
| Kangaroo (1982) | 82,005,063 | 1,234 |
| Kanji Combi: Yakuzumo (2024) | 0 | 0 |
| Kanji Sonomama Rakubiki Jiten DS (2006) | 1,704 | 4 |
| Kanso (2021) | 1,462 | 8 |
| Kantai Collection (2013) | 88,978,534 | 46,056 |
