| Kidou Butouden G Gundam | Aeon Genesis | Action > Fighting | SNES | Fully Playable | 1.00 | 20 Sep 2002 | EN |
| Kid Klown in Night Mayor World | NikcDC | Action > Platformer | NES | Fully Playable | 1.1 | 07 Apr 2013 | EN |
| Kettou Beast Wars: Beast Senshi Saikyou Ketteisen | Six Feet Under | Action > Fighting | GB | Unfinished | 0.1 | 08 Aug 1999 | EN |
| Ketsui Death Label: Kizuna Jigoku Tachi | z3tzilla | Action > Shooter | NDS | Unfinished | 0.2 | 22 Jul 2013 | EN |
| Keroppi to Keroriinu no Splash Bomb! | Suicidal Translations | Action | NES | Fully Playable | 1.0 | 28 Mar 2000 | EN |
| Kero Kero Keroppi no Daibouken 2: Donuts Ike ha Oosawagi! | The Spoony Bard | Action > Platformer | NES | Fully Playable | 1.0 | 22 Dec 2000 | EN |
| Kero Kero Keroppi no Daibouken | Gaijin Productions | Puzzle | NES | Fully Playable | 1.00 | 18 Jan 1999 | EN |
| Kenka Banchou 2: Full Throttle | TransGen | Action > Beat 'Em Up | PS2 | Unfinished | 1.0alpha | 27 Nov 2015 | EN |
| Keitai Denjuu Telefang: Power Version | andwhyisit | Role Playing > Action RPG | GB | Unfinished | 144 | 15 Aug 2020 | EN |
| Keisan Game: Sansuu 5+6 Toshi | Pikachumanson | Other | NES | Fully Playable | 1.0 | 15 Jun 2013 | EN |
| Keisan Game: Sansuu 4 Toshi | Pikachumanson | Other | NES | Fully Playable | 1.0 | 26 May 2013 | EN |
| Keisan Game: Sansuu 3 Toshi | Pikachumanson | Other | NES | Fully Playable | 1.0 | 10 Jun 2013 | EN |
| Keisan Game: Sansuu 2 Toshi | Pikachumanson | Other | NES | Fully Playable | 1.0 | 01 Jun 2013 | EN |
| Keisan Game: Sansuu 1 Toshi | Pikachumanson | Other | NES | Fully Playable | 1.0 | 28 May 2013 | EN |
| Kaze no Klonoa: Moonlight Museum | PowerStone05 | Action > Platformer | WS | Unfinished | 0.511 | 04 Jul 2018 | EN |
| Kawa no Nushi Tsuri | Disconnected Translations | Role Playing | NES | Unfinished | 0.15 | 28 Jun 1999 | EN |
| Kawa no Nushi Tsuri | Pikachumanson | Role Playing | NES | Fully Playable | 0.91 | 17 Dec 2013 | EN |
| Kart Fighter | DvD Translations | Action > Fighting | NES | Fully Playable | 1.0 | 02 Apr 2004 | EN |
| Karous | Rolly | Action > Shooter | DC | Fully Playable | 1.0 | 08 Jun 2019 | EN |
| Karnov | Vice Translations, Eien Ni Hen | Action > Platformer | NES | Fully Playable | 1.10 | 12 May 2006 | EN |
