| 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) | 747,203 | 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) | 293,116 | 263 |
| Kal Online (2004) | 1,441,346 | 1,084 |
| Kalaban (2016) | 7,662,167 | 522 |
| Kaleido Chaos (2018) | 0 | 0 |
| KALEIDO STELLA (2019) | 170,074 | 37 |
| Kalia (2025) | 269,042 | 5 |
| Kalimba (2014) | 37,052,719 | 2,121 |
| Kalin no Tsurugi (1987) | 87,679 | 63 |
| Kalinur (2022) | 27,765 | 111 |
| KALPA: Cosmic Symphony (2024) | 177,513 | 510 |
| Kalyskah (2026) | 0 | 0 |
| Kalyzmyr (2022) | 235 | 4 |
| Kama Bullet Heritage (2017) | 0 | 0 |
| Kamaeru: A Frog Refuge (2024) | 165,311 | 254 |
| Kamaitachi no Yoru (1994) | 17,680,380 | 1,758 |
| Kamen Rider 555 (2003) | 9,445,385 | 814 |
| Kamen Rider Battle Ganbaride Card Battle Taisen (2010) | 8,867 | 44 |
| Kamen Rider Battle: Ganbaride (2008) | 914,172 | 608 |
| Kamen Rider Blade (2004) | 10,306,232 | 965 |
| Kamen Rider Climax Scramble Zi-O (2018) | 6,192,264 | 880 |
| Kamen Rider Dragon Knight (2009) | 1,550,662 | 293 |
| Kamen Rider Kabuto (2006) | 17,811,237 | 2,000 |
| Kamen Rider SD: Shutsugeki!! Rider Machine (1993) | 107,506 | 78 |
| Kamen Rider: Battride War (2013) | 24,699,356 | 1,197 |
| Kamen Rider: Battride War Genesis (2016) | 33,285,046 | 4,842 |
| Kamen Rider: Battride War II (2014) | 25,300,845 | 1,554 |
| Kamen Rider: City Wars (2017) | 6,471,633 | 2,738 |
| Kamen Rider: Climax Fighters (2017) | 20,889,160 | 2,654 |
| Kamen Rider: Climax Heroes (2009) | 8,213,879 | 1,609 |
| Kamen Rider: Climax Heroes Fourze (2011) | 1,631,151 | 716 |
| Kamen Rider: Climax Heroes OOO (2010) | 6,209,468 | 577 |
| Kamen Rider: Climax Heroes W (2009) | 134,592 | 85 |
| Kamen Rider: Climax Scramble (2018) | 3,006,007 | 737 |
| Kamen Rider: Dragon Knight (2009) | 765,202 | 288 |
| Kamen Rider: Memory of Heroez (2020) | 10,120,512 | 3,084 |
| Kamen Rider: SummonRide (2014) | 170,679 | 68 |
| Kamen Rider: Super Climax Heroes (2012) | 26,867,692 | 7,122 |
| Kameo (2005) | 1,832,225 | 599 |
| Kameo: Elements of Power (2005) | 6,878,260 | 2,764 |
| 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) | 125,910 | 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) | 40,452 | 57 |
| Kamikaze Veggies (2021) | 224,210 | 225 |
| Kamiko (2017) | 2,135,336 | 881 |
| Kamile VR (2019) | 711 | 3 |
| Kamilia (2026) | 23,770 | 12 |
| 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) | 175,240 | 207 |
| Kana no Mado (2025) | 0 | 0 |
| Kana Quest (2020) | 28,162 | 44 |
