| Knights: Learn to Fly (2005) | 18,055 | 14 |
| KnightShift (2003) | 323,807 | 686 |
| Knighty Night (2019) | 8,559 | 23 |
| Knives Out (2017) | 1,621,493,731 | 45,870 |
| Knock 'Em Down!: Bowling (2018) | 653,373 | 50 |
| Knock on the Coffin Lid (2020) | 1,727,271 | 1,661 |
| Knock the Monster (2008) | 4,201 | 1 |
| Knock-Knock (2013) | 280,285,567 | 11,812 |
| Knockout City (2021) | 93,858,724 | 36,318 |
| Knockout Daddy (2020) | 157 | 6 |
| Knockout Home Fitness (2020) | 529,030 | 305 |
| Knockout Home Fitness (2021) | 0 | 0 |
| Knockout Kings (1998) | 261,774 | 419 |
| Knockout Kings 2000 (1999) | 708,839 | 509 |
| Knockout Kings 2001 (1999) | 283 | 2 |
| Knockout Kings 2001 (2000) | 289,861 | 329 |
| Knockout Kings 2002 (2002) | 244,469 | 282 |
| Knockout Kings 2003 (2002) | 0 | 0 |
| Knockout League (2017) | 28,571,524 | 692 |
| Knockout Party (2009) | 14,013,190 | 43 |
| KNOCKturne (2024) | 0 | 0 |
| Knossos (2017) | 95,535 | 82 |
| Knot (2016) | 23 | 3 |
| Knot in 3D (1983) | 1,984 | 16 |
| KnotBot (2020) | 120,176 | 37 |
| Knowledge is Power (2017) | 5,337,688 | 726 |
| Knowledge is Power: Decades (2018) | 682,976 | 170 |
| Knowledge Trainer: Trivia (2012) | 965,068 | 22 |
| Knuckle Bash (1993) | 691,317 | 331 |
| Knuckle Busters (1986) | 0 | 0 |
| Knuckle Heads (1992) | 2,038,500 | 185 |
| Knuckle Sandwich (2023) | 642,512 | 447 |
| Knuckles' Chaotix (1995) | 25,950,980 | 3,782 |
| Knytt Stories (2007) | 2,857,353 | 2,756 |
| Knytt Underground (2012) | 1,232,103 | 1,201 |
| Koa and the Five Pirates of Mara (2023) | 667,461 | 1,827 |
| The Koala Brothers: Outback Adventures (2006) | 32,860 | 42 |
| Koala Kids (2015) | 279,515 | 25 |
| Koala Kids Golf (2023) | 10,238 | 53 |
| Koala Lumpur: Journey to the Edge (1997) | 9,140 | 22 |
| Kobe Bryant in NBA Courtside (1998) | 536,842 | 335 |
| Kobitodzukan: Kobito Kansatsu Set (2012) | 10 | 1 |
| Kobold Castle (2023) | 360 | 8 |
| KoboldKare (2020) | 12,006 | 2 |
| The Kobolds Left Behind (2022) | 0 | 0 |
| Koboo: The Tree Spirit (2024) | 9,081 | 39 |
| Koboomballs (2018) | 18 | 1 |
| Kobyashi Naru (1987) | 3,287 | 12 |
| Koch media ng moto gp 2020 (2020) | 679,934 | 270 |
| Kodomo Chousadan Mighty Pockets (1997) | 45,985 | 6 |
| Kodu Game Lab (2009) | 44,819 | 68 |
| Koei Nobunaga's Ambition Taishi (2017) | 109,688 | 128 |
| KOF: Maximum Impact (2004) | 5,588,292 | 2,812 |
| KOF: Maximum Impact 2 (2006) | 0 | 0 |
| Koffi: Yellow Kopter (2003) | 827 | 11 |
| Kofi Quest: Alpha MOD (2020) | 635,880 | 263 |
| Kogado Studio Yumeutsu Re: Master (2019) | 0 | 0 |
| Koguru GuruGuru (2001) | 0 | 0 |
| Kohan II: Kings of War (2004) | 106,173 | 247 |
| Kohan: Ahriman's Gift (2001) | 26,043 | 62 |
| Kohan: Immortal Sovereigns (2001) | 99,335 | 124 |
| Kohate (2020) | 703,008 | 72 |
| Koi ga Saku Koro Sakura Doki (2014) | 47,323 | 110 |
| Koi Musubi (2017) | 3,302 | 34 |
| Koi x Shin Ai Kanojo (2023) | 2 | 1 |
| Koi-Koi VR: Love Blossoms (2022) | 5,676 | 7 |
| Koihime Enbu (2018) | 954,134 | 948 |
| Koihime Enbu RyoRaiRai (2018) | 253,825 | 409 |
| Koikoi (2018) | 12 | 1 |
| Koira (2025) | 750,074 | 180 |
| Kokorogawari (2018) | 42,475 | 8 |
| KOKORONULL (2024) | 0 | 0 |
| Kokotoni Wilf (1984) | 28,443 | 41 |
| Kokuga (2012) | 58,201 | 40 |
| Kokurase (2016) | 11,381 | 92 |
