| Game Name | System |
|---|
| Kid Icarus - Angel Land Story (USA, Europe) | NES |
| Kid Klown in Night Mayor World (USA) | NES |
| Kid Kool and the Quest for the Seven Wonder Herbs (USA) | NES |
| Kid Niki - Radical Ninja (USA) | NES |
| Kid Niki - Radical Ninja (USA) (Rev A) | NES |
| King Kong 2 - Ikari no Megaton Punch (Japan) | NES |
| King Kong 2 - Ikari no Megaton Punch (Japan) [En by DvD Rev A] (~King Kong Lives - Megaton Punch of Rage) | NES |
| King Neptune's Adventure (USA) (Unl) | NES |
| King of Kings (Japan) | NES |
| King of Kings, The (USA) (Unl) (v1.1) | NES |
| King of Kings, The (USA) (Unl) (v1.2) | NES |
| King of Kings, The (USA) (Unl) (v1.3) | NES |
| King of Kings, The (USA) (Unl) (v5.0) | NES |
| King's Knight (Japan) | NES |
| King's Knight (USA) | NES |
| King's Quest V (USA) | NES |
| Kings of the Beach - Professional Beach Volleyball (USA) | NES |
| Kinnikuman - Muscle Tag Match (Japan) | NES |
| Kinnikuman - Muscle Tag Match (Japan) (Rev 1) | NES |
| Kinnikuman - Muscle Tag Match (Japan) [En by Stardust Crusaders v1.0] | NES |
| Kiteretsu Dai Hyakka (Japan) | NES |
| Kiwi Kraze - A Bird-Brained Adventure! (USA) | NES |
| Klash Ball (USA) | NES |
| Klax (Japan) | NES |
| Klax (USA) (Unl) | NES |
| Knight Rider (Europe) | NES |
| Knight Rider (Japan) | NES |
| Knight Rider (USA) | NES |
| Konami Hyper Soccer (Europe) | NES |
| Konamic Sports in Seoul (Japan) | NES |
| Korean Igo (Korea) (Unl) | NES |
| Kouryuu Densetsu Villgust Gaiden (Japan) | NES |
| Kouryuu Densetsu Villgust Gaiden (Japan) [En by J2e v1.0] (~Armed Dragon Fantasy Villgust) | NES |
| Koushien (Japan) | NES |
| Krazy Kreatures (USA) (Unl) | NES |
| Krion Conquest, The (USA) | NES |
| Krusty's Fun House (Europe) | NES |
| Krusty's Fun House (USA) | NES |
| Kujaku Ou (Japan) | NES |
| Kujaku Ou (Japan) [En by Snark v1.1] (~Peacock King) | NES |
| Kujaku Ou 2 (Japan) | NES |
| Kujaku Ou 2 (Japan) [En by Snark v1.0] (~Peacock King II) | NES |
| Kung Fu (Europe) | NES |
| Kung Fu (USA) | NES |
| Kung-Fu Heroes (USA) | NES |
| Kunio Kun no Nekketsu Soccer League (Japan) | NES |
| Kunio Kun no Nekketsu Soccer League (Japan) [En by PentarouZero v1.2] (Technos Soccer League) | NES |
| Kurogane Hiroshi no Yosou Daisuki! - Kachiuma Densetsu (Japan) | NES |
| Kyonsees 2 (Japan) | NES |
| Kyoro Chan Land (Japan) | NES |
| Kyouryuu Sentai Juuranger (Japan) | NES |
| Kyouryuu Sentai Juuranger (Japan) [En by Dank-Trans v0.99] (~Kyoryu Sentai ZyuRanger) | NES |
| Kyuukyoku Harikiri Koushien (Japan) | NES |
| Kyuukyoku Harikiri Stadium '88 (Japan) | NES |
| Kyuukyoku Harikiri Stadium '88 (Japan) (Rev 1) | NES |
| Kyuukyoku Harikiri Stadium - Heisei Gannen Ban (Japan) | NES |
| Kyuukyoku Harikiri Stadium 3 (Japan) | NES |
| Kyuukyoku Tiger (Japan) | NES |
| Labyrinth (Japan) | NES |
| Labyrinth (Japan) [En by Suicidal v20030908Beta] | NES |
| Lagrange Point (Japan) | NES |
| Lasa-r Ishii no Childs Quest (Japan) | NES |
| Laser Invasion (USA) | NES |
| Last Action Hero (USA) | NES |
| Last Armageddon (Japan) | NES |
| Last Ninja, The (USA) | NES |
| Last Starfighter, The (USA) | NES |
| Law of the West (Japan) | NES |
| Layla (Japan) | NES |
| Lee Trevino's Fighting Golf (Europe) | NES |
| Lee Trevino's Fighting Golf (USA) | NES |
| Legacy of the Wizard (USA) | NES |
| Legend of Kage, The (USA) | NES |
| Legend of Prince Valiant, The (Europe) | NES |
| Legend of Robin Hood, The (USA) (Proto) | NES |
| Legend of the Ghost Lion (USA) | NES |
| Legendary Wings (USA) | NES |
| Legends of the Diamond - The Baseball Championship Game (USA) | NES |
| Lemmings (Europe) | NES |
| Lemmings (USA) | NES |
| Lethal Weapon (Europe) | NES |
| Lethal Weapon (USA) | NES |
| Life Force (USA) | NES |
| Life Force - Salamander (Europe) | NES |
| Lin Ze Xu Jin Yan (China) (Unl) | NES |
| Linus Spacehead's Cosmic Crusade (USA) (En,Fr,De,Es) (Unl) | NES |
| Lion King, The (Europe) | NES |
| Lipple Island (Japan) | NES |
| Little League Baseball - Championship Series (USA) | NES |
| Little Magic (Japan) | NES |
| Little Magic (Japan) [En by Gaijin+TransBRC v0.33Alpha] (Incomplete) | NES |
| Little Mermaid - Ningyo Hime (Japan) | NES |
| Little Mermaid, The (USA) | NES |
| Little Nemo - The Dream Master (Europe) | NES |
| Little Nemo - The Dream Master (USA) | NES |
| Little Ninja Brothers (Europe) | NES |
| Little Ninja Brothers (USA) | NES |
| Little Red Hood (Australia) (Unl) (HES) | NES |
| Little Red Hood - Xiao Hong Mao (Asia) (Unl) (Sachen) (Famicom) | NES |
| Little Samson (Europe) | NES |
