| Kajko i Kokosz (1994) | 1,668,165 | 161 |
| Kajko i Kokosz 2: Cudowny Lek (2006) | 34,015 | 38 |
| Kajko i Kokosz: Twierdza Czarnoksieznika (2011) | 949 | 1 |
| Kakegurui: Cheating Allowed (2018) | 9,501 | 14 |
| Kaku Ancient Seal (2020) | 20,053 | 104 |
| Kaku-San-Sei Million Arthur (2012) | 7,194,957 | 2,532 |
| KAKU: Ancient Seal (2023) | 747,111 | 1,461 |
| 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) | 293,065 | 263 |
| Kal Online (2004) | 1,441,336 | 1,083 |
| Kalaban (2016) | 7,662,066 | 522 |
| Kaleido Chaos (2018) | 0 | 0 |
| KALEIDO STELLA (2019) | 170,074 | 37 |
| Kalia (2025) | 0 | 0 |
| Kalimba (2014) | 37,026,138 | 2,120 |
| Kalin no Tsurugi (1987) | 87,679 | 63 |
| Kalinur (2022) | 27,765 | 111 |
| KALPA: Cosmic Symphony (2024) | 176,939 | 481 |
| Kalyzmyr (2022) | 235 | 4 |
| Kama Bullet Heritage (2017) | 0 | 0 |
| Kamaeru: A Frog Refuge (2024) | 165,308 | 254 |
| Kamaitachi no Yoru (1994) | 17,680,168 | 1,753 |
| Kamen Rider 555 (2003) | 9,444,024 | 814 |
| Kamen Rider Battle Ganbaride Card Battle Taisen (2010) | 8,867 | 44 |
| Kamen Rider Battle: Ganbaride (2008) | 914,172 | 608 |
| Kamen Rider Blade (2004) | 10,299,387 | 961 |
| Kamen Rider Climax Scramble Zi-O (2018) | 6,192,205 | 880 |
| Kamen Rider Dragon Knight (2009) | 1,550,662 | 293 |
| Kamen Rider Kabuto (2006) | 17,808,542 | 1,997 |
| Kamen Rider SD: Shutsugeki!! Rider Machine (1993) | 107,506 | 78 |
| Kamen Rider: Battride War (2013) | 24,699,260 | 1,197 |
| Kamen Rider: Battride War Genesis (2016) | 33,282,273 | 4,833 |
| Kamen Rider: Battride War II (2014) | 25,300,828 | 1,554 |
| Kamen Rider: City Wars (2017) | 6,471,633 | 2,738 |
| Kamen Rider: Climax Fighters (2017) | 20,888,839 | 2,654 |
| Kamen Rider: Climax Heroes (2009) | 8,213,187 | 1,609 |
| Kamen Rider: Climax Heroes Fourze (2011) | 1,631,109 | 716 |
| Kamen Rider: Climax Heroes OOO (2010) | 6,209,368 | 576 |
| Kamen Rider: Climax Heroes W (2009) | 134,584 | 85 |
| Kamen Rider: Climax Scramble (2018) | 3,005,939 | 737 |
| Kamen Rider: Dragon Knight (2009) | 765,104 | 287 |
| Kamen Rider: Memory of Heroez (2020) | 10,119,846 | 3,074 |
| Kamen Rider: SummonRide (2014) | 170,570 | 67 |
| Kamen Rider: Super Climax Heroes (2012) | 26,861,273 | 7,111 |
| Kameo (2005) | 1,832,207 | 599 |
| Kameo: Elements of Power (2005) | 6,877,253 | 2,755 |
| KAMI 2 (2017) | 5,931,179 | 3,452 |
| Kami-sama's Personal Servant (2024) | 0 | 0 |
| Kami: Parade of Senses (2026) | 724 | 1 |
| KAMiBAKO - Mythology of Cube (2025) | 18,642 | 82 |
| KamiCrazy (2008) | 0 | 0 |
| Kamifuda (2022) | 3,833 | 61 |
| Kamigami no Asobi (2013) | 125,906 | 150 |
| Kamigami: Clash of the Gods (2022) | 9,456 | 38 |
| Kamikaze Cube (2017) | 0 | 0 |
| Kamikaze Cube 2 (2018) | 15,004 | 3 |
| Kamikaze Empire (2024) | 164 | 2 |
| Kamikaze Lassplanes (2024) | 40,449 | 57 |
| Kamikaze Veggies (2021) | 224,210 | 225 |
| Kamiko (2017) | 2,135,329 | 881 |
| Kamile VR (2019) | 711 | 3 |
| Kamilia (2026) | 0 | 0 |
| KAMITSUBAKI CITY ENSEMBLE (2024) | 29,607 | 32 |
| KAMITSUBAKI CITY REGENERATE (2025) | 15,438 | 11 |
| Kamiwaza (2006) | 341,917 | 647 |
| Kamiwaza: Way of the Thief (2022) | 556,105 | 271 |
| Kampfgruppe (1985) | 32,022 | 21 |
| Kamyla and the Scarlet Mage (2024) | 0 | 0 |
| Kan Colle Kai (2016) | 174,387 | 207 |
| Kana no Mado (2025) | 0 | 0 |
| Kana Quest (2020) | 28,162 | 44 |
| Kanamono (2021) | 373 | 7 |
