| Kendo Rage (1993) | 1,592,052 | 359 |
| Keng's Little Universe (2022) | 191 | 3 |
| Kengo (2001) | 65,358 | 55 |
| Kengo 3 (2004) | 676,465 | 188 |
| Kengo: Legend of the 9 (2007) | 276,559 | 69 |
| Kengo: Master of Bushido (2000) | 333,242 | 162 |
| Kenka Bancho: Badass Rumble (2008) | 960,284 | 229 |
| Kenkou Ouen Recipe 1000: DS Kondate Zenshuu (2006) | 2,595 | 5 |
| Kennedy Approach (1985) | 8,311 | 22 |
| Kenny 7 (2023) | 0 | 0 |
| Kenny Dalglish Soccer Match (1989) | 15,233 | 20 |
| Kenny's Adventure: In search of family treasures (2006) | 26,503 | 60 |
| Kensei: Sacred Fist (1998) | 938,429 | 1,022 |
| Kenseiden (1988) | 715,640 | 532 |
| Kenshi (2018) | 361,462,349 | 58,495 |
| Kenshin Dragon Quest: Yomigaerishi Densetsu no Ken (2003) | 111,818 | 30 |
| Kentilla (1984) | 4,944 | 11 |
| Kentucky Route Zero (2013) | 6,034,012 | 3,172 |
| Kepler-2100 (2024) | 1,307 | 11 |
| Keplerth (2022) | 3,325,737 | 1,917 |
| Kerbal Space Program (2015) | 1,642,786,399 | 137,988 |
| Kerbal Space Program 2 (2023) | 97,833,309 | 9,986 |
| KERIBATO! (2024) | 21,076 | 6 |
| Keriotosse! (1998) | 95,071 | 28 |
| Kernel Quest (2023) | 0 | 0 |
| Kernmantle (2020) | 1,473 | 8 |
| Kero Blaster (2014) | 1,752,777 | 1,742 |
| Kero Kero Keroppi no Daibouken (1991) | 63,377 | 31 |
| Kero Kero Keroppi no Daibouken 2 (1993) | 118,100 | 105 |
| Keroro Gunso: Meromero Battle Royale (2004) | 334,550 | 64 |
| Keroro Gunso: Meromero Battle Royale Z (2005) | 93,489 | 58 |
| Keroro RPG: Kishi to Musha to Densetsu no Kaizoku (2010) | 1,480,174 | 185 |
| Kersploosh! (2011) | 40,602 | 24 |
| Kessen (2000) | 1,233,121 | 542 |
| Kessen II (2001) | 1,328,530 | 1,269 |
| Kessen III (2004) | 1,169,780 | 918 |
| Ketchup and Mayonnaise (2022) | 28,914 | 56 |
| Kether (1993) | 109,618 | 31 |
| KetnetKick (2004) | 24,647 | 4 |
| KetnetKick 2 (2008) | 8,635 | 3 |
| Ketsui: Kizuna Jigoku Tachi (2003) | 1,660,945 | 1,377 |
| Ketzal's Corridors (2011) | 88,531 | 54 |
| Kevin Keegan's Player Manager (1993) | 8,324 | 29 |
| Kevin's Path to Wizdom (2022) | 402 | 13 |
| Kevin(1997-2077) (2024) | 502 | 4 |
| Kewtia: Crystallite Hunt (2024) | 5,181 | 36 |
| Key, Shovel, Treasure (2017) | 253 | 1 |
| Keyaki no kiseki (2017) | 1,696,581 | 280 |
| Keyboard Sports - Saving QWERTY (2021) | 22,726 | 45 |
| Keyboard Tennis (2024) | 0 | 0 |
| Keyboard Warrior: Dreamstate (2022) | 1,012 | 8 |
| Keyboardmania (2000) | 248,336 | 257 |
| KEYBOARDMANIA 3rdMIX (2001) | 41,350 | 30 |
| keycode (2024) | 1,810 | 3 |
| Keykeeper (2024) | 842 | 2 |
| Keylocker | Turn Based Cyberpunk Action (2024) | 24,338 | 49 |
| Keys And Kastles (2024) | 11,401 | 6 |
| The Keys to Maramon (1990) | 5,520 | 9 |
| Keysight (2020) | 87,358 | 13 |
| Keystone Kapers (1983) | 398,213 | 450 |
| Keystone Library (2022) | 0 | 0 |
| KeyWe (2021) | 5,871,092 | 2,340 |
| KGB (1992) | 1,014,360 | 205 |
| KGB Super Spy (1989) | 3,624 | 13 |
| Khamrai (2000) | 31,873 | 66 |
| Khaos Wind (2021) | 3,845 | 14 |
| Kharon's Crypt - Even Death May Die (2022) | 9,711 | 27 |
| Khet 2.0 (2014) | 126,095 | 16 |
| Khimera: Destroy All Monster Girls (2016) | 44,872 | 568 |
| Khimera: Puzzle Island (2020) | 1,975 | 186 |
| Khitarii and Khimoshi (2023) | 0 | 0 |
| Kholat (2015) | 47,345,909 | 6,732 |
| Khufu's Delivery Service (2018) | 32 | 2 |
| Khuga Bash! (2024) | 2,694 | 4 |
| Kibbi Keeper (2022) | 3,394 | 40 |
