| Ken Griffey Jr.'s Winning Run (1996) | 455,258 | 179 |
| Ken to Mahou to Gakuen Mono. 3 (2010) | 62,822 | 66 |
| Ken's Labyrinth (1993) | 247,859 | 311 |
| Ken-chan to Chie Asobi (1997) | 0 | 0 |
| Kena: Bridge of Spirits (2021) | 153,327,289 | 132,973 |
| Kendall and Kylie (2016) | 2,592,780 | 43 |
| Kendo Rage (1993) | 1,593,742 | 370 |
| Keng's Little Universe (2022) | 191 | 3 |
| Kengo (2001) | 65,407 | 56 |
| Kengo 3 (2004) | 696,277 | 205 |
| Kengo: Legend of the 9 (2007) | 277,240 | 71 |
| Kengo: Master of Bushido (2000) | 335,720 | 169 |
| Kenka Bancho: Badass Rumble (2008) | 960,791 | 228 |
| Kenkou Ouen Recipe 1000: DS Kondate Zenshuu (2006) | 2,666 | 6 |
| Kennedy Approach (1985) | 8,319 | 23 |
| Kenny 7 (2023) | 0 | 0 |
| Kenny Dalglish Soccer Match (1989) | 15,233 | 20 |
| Kenny's Adventure: In search of family treasures (2006) | 26,680 | 60 |
| Kensei: Sacred Fist (1998) | 949,066 | 1,035 |
| Kenseiden (1988) | 723,064 | 555 |
| Kenshi (2018) | 376,518,123 | 60,483 |
| Kenshin Dragon Quest: Yomigaerishi Densetsu no Ken (2003) | 111,818 | 30 |
| Kentilla (1984) | 4,944 | 11 |
| Kentucky Route Zero (2013) | 6,113,016 | 3,190 |
| Kepler-2100 (2024) | 1,307 | 11 |
| Keplerth (2022) | 3,326,775 | 1,926 |
| Kerbal Space Program (2015) | 1,659,973,828 | 139,879 |
| Kerbal Space Program 2 (2023) | 102,036,995 | 10,069 |
| KERIBATO! (2024) | 21,079 | 6 |
| Keriotosse! (1998) | 95,071 | 28 |
| Kernel Quest (2023) | 0 | 0 |
| Kernmantle (2020) | 1,473 | 8 |
| Kero Blaster (2014) | 1,758,306 | 1,756 |
| Kero Kero Keroppi no Daibouken (1991) | 63,379 | 31 |
| Kero Kero Keroppi no Daibouken 2 (1993) | 118,153 | 106 |
| Keroro Gunso: Meromero Battle Royale (2004) | 335,469 | 66 |
| Keroro Gunso: Meromero Battle Royale Z (2005) | 93,739 | 59 |
| Keroro RPG: Kishi to Musha to Densetsu no Kaizoku (2010) | 1,480,983 | 186 |
| Kersploosh! (2011) | 40,630 | 26 |
| Kessen (2000) | 1,228,922 | 549 |
| Kessen II (2001) | 1,334,349 | 1,287 |
| Kessen III (2004) | 1,172,647 | 925 |
| Ketchup and Mayonnaise (2022) | 28,914 | 56 |
| Kether (1993) | 109,618 | 31 |
| KetnetKick (2004) | 24,703 | 4 |
| KetnetKick 2 (2008) | 8,662 | 3 |
| Ketsui: Kizuna Jigoku Tachi (2003) | 1,676,100 | 1,400 |
| Ketzal's Corridors (2011) | 88,548 | 54 |
| Kevin Keegan's Player Manager (1993) | 8,592 | 34 |
| 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) | 1,696,588 | 280 |
| Keyboard Engine (2017) | 0 | 0 |
| Keyboard Sports - Saving QWERTY (2021) | 22,726 | 45 |
| Keyboard Tennis (2024) | 0 | 0 |
| Keyboard Warrior: Dreamstate (2022) | 1,012 | 8 |
| Keyboardmania (2000) | 248,743 | 259 |
| KEYBOARDMANIA 3rdMIX (2001) | 41,371 | 30 |
| keycode (2024) | 1,938 | 3 |
| Keykeeper (2024) | 842 | 2 |
| Keylocker | Turn Based Cyberpunk Action (2024) | 24,483 | 75 |
| Keys And Kastles (2024) | 11,401 | 6 |
| The Keys to Maramon (1990) | 5,520 | 9 |
| Keyscaper (2017) | 0 | 0 |
| Keysight (2020) | 88,395 | 13 |
| Keystone Kapers (1983) | 400,941 | 457 |
| Keystone Library (2022) | 0 | 0 |
| KeyWe (2021) | 5,943,487 | 2,416 |
| KGB (1992) | 1,026,085 | 205 |
| KGB Super Spy (1989) | 5,567 | 14 |
| Khamrai (2000) | 31,882 | 67 |
| Khaos Wind (2021) | 3,845 | 14 |
| Kharon's Crypt - Even Death May Die (2022) | 9,711 | 27 |
