| K-On! Hōkago Rhythm Time | rhythm game, music video game | Q780528 | arcade video game machine |
| Kai Yuen's Overlapped Universe | — | — | Microsoft Windows |
| Kaichu: The Kaiju Dating Sim | dating sim | Squiddershins | Microsoft Windows, macOS, Linux, Xbox Series X and Series S |
| Kaiju No. 8: The Game | gacha game, role-playing video game | Akatsuki Games | Microsoft Windows, Android |
| Kaijū-ō Godzilla | action game | — | Game Boy |
| Kakele Online - MMORPG | role-playing video game, massively multiplayer online game | — | Microsoft Windows, macOS, Linux |
| Kal Online | massively multiplayer online role-playing game | — | Microsoft Windows |
| Kalling Kingdom | simulation video game, strategy video game | — | Microsoft Windows, Linux |
| Kamen Rider SD: Run! Mighty Riders | racing video game | — | Family Computer |
| Kamen Rider: Memory of Heroez | — | Winning Entertainment Group | — |
| Kami | — | State of Play | Microsoft Windows, macOS, Nintendo 3DS |
| Kaminaru Kimi to | otome game, visual novel | Design Factory | PlayStation Portable |
| Kan no Tame no Bible: The Yujo Adventure: Entaru/Tamashi | adventure video game | HuneX | — |
| Karaoke Revolution Glee: Volume 2 | music video game | Hijinx Studios | Wii |
| Karaoke Revolution Glee: Volume 3 | music video game | Hijinx Studios | Wii |
| Karaoke Revolution: Glee | music video game | Hijinx Studios | Wii |
| Karate Cat | casual game | — | Microsoft Windows, macOS, Linux |
| Kard Combat | action game | Hothead Games | — |
| Karma | — | — | Acorn Archimedes |
| Karous | shoot 'em up | Milestone | arcade video game machine |
| Katakoi no Tsuki | eroge, dating sim, visual novel | Studio Ryokucha | Microsoft Windows |
| Keatz: The Lonely Bird | action game | Anamik Majumdar | Microsoft Windows |
| Keeper of the Day and Night | casual game, adventure video game, role-playing video game | Hosted Games | Microsoft Windows, macOS, Linux |
| KeeperRL | roguelike, strategy video game, empire-building video game | — | Microsoft Windows, macOS, Linux |
| Keiba Saisho no Housoku '95 | — | — | — |
| Keio Flying Squadron 2 | shoot 'em up, action game, platform game | JVC | — |
| Keitai Denjū Telefang: Power Version | role-playing video game | Winning Entertainment Group | Game Boy Color |
| Keitai Denjū Telefang: Speed Version | role-playing video game | Winning Entertainment Group | Game Boy Color |
| Kelly Slater's Pro Surfer | — | HotGen | Classic Mac OS, Microsoft Windows, Nintendo GameCube |
| Kemono Friends | real-time strategy, role-playing video game | — | Android |
| Kemono Friends PAVILION | incremental game | — | Android |
| Kemono Friends Picross | nonogram video game | Jupiter | — |
| KEMONOPOLY | simulation video game | — | Microsoft Windows |
| Kengo: Legend of the 9 | fighting game | Genki | — |
| Kenny Dalglish Soccer Manager | — | Eutechnyx | ZX Spectrum, Amstrad CPC, Commodore 64 |
| Keplerth | role-playing video game | TARO | Microsoft Windows |
| Kernmantle | adventure video game | Q52159646 | Microsoft Windows |
| Kessen | historical video game, real-time tactics | Koei | — |
| Kessen II | historical video game, real-time tactics, strategy video game | Koei | — |
| Key Puss | casual game, strategy video game | — | Microsoft Windows |
| KGB Agent | — | — | Commodore 64 |
| Kharé: Cityport of Traps | — | Inkle | Microsoft Windows, Android |
| Ki11er Clutter | — | Puzzles By Joe | Microsoft Windows |
| Kick it, Bunny! | — | — | Microsoft Windows |
| Kick Off | association football video game | Dino Dini | DOS, Nintendo Entertainment System, Super Nintendo Entertainment System, ZX Spectrum, Amstrad CPC, Atari ST, Commodore 64 |
| Kick Off 2 | association football video game | — | ZX Spectrum, Atari ST, Commodore 64 |
| Kickoff '97 | — | — | Microsoft Windows, DOS |
| Kid Ball Adventure | casual game, adventure video game | Spoonbox Studio, Ratalaika Games | Microsoft Windows, Xbox Series X and Series S |
| Kid Icarus: Uprising | adventure video game, action game, action-adventure game, third-person shooter | Sora Ltd., Project Sora | Nintendo 3DS |
| Kid Kirby | — | — | Super Nintendo Entertainment System |
| KID MIX Section | digital tabletop game | — | — |
| Kidgilantes | casual game, adventure video game, strategy video game | — | Microsoft Windows |
| Kidou Keisatsu Patlabor: Game Edition | action game | — | — |
| Kidz Sports Crazy Mini Golf | — | Data Design Interactive | Wii |
| Kidz Sports: American Football | — | Data Design Interactive | Wii |
| Kieta Princess | action-adventure game | — | Famicom Disk System |
| Kikan no Kanata -The Will of a Single Tale- | visual novel | Stoner Tomohito | Microsoft Windows |
| Kikstart: Off-Road Simulator | — | — | Atari 8-bit family, Commodore 64 |
| Kikōyoku Senki: Gin no Toki no Corona | eroge, tactical role-playing game, visual novel | — | Microsoft Windows |
| Kileak: The DNA Imperative | first-person shooter, science fiction video game | Genki | — |
| Kili's Treasure | — | — | Microsoft Windows, macOS |
| Kill Them With Cuteness | casual game, adventure video game, action game, action-adventure game | — | Microsoft Windows |
| KILL YOUR FRIENDS | action game | — | Microsoft Windows, macOS, Linux |
| Killer Frequency | — | Team17 | Microsoft Windows, Xbox Series X and Series S |
| Killer Instinct 2 | — | Rare Ltd. | arcade video game machine |
| Killer Instinct Gold | — | Rare Ltd. | Nintendo 64 |
| Killer Sudoku | casual game, strategy video game | Studio Goya | Microsoft Windows, macOS |
| Killer Watt | — | Antony Crowther | Commodore 64 |
| Killing Trials | adventure video game, action game, action-adventure game | — | Microsoft Windows |
| Killzone | — | Sony Interactive Entertainment, Guerrilla Games | PlayStation 3 |
| Killzone: Mercenary | — | Guerrilla Cambridge | PlayStation Vita |
| Killzone: Shadow Fall Intercept | first-person shooter, action game | Sony Interactive Entertainment | — |
| Kimi ga Nozomu Eien | eroge, visual novel | — | Microsoft Windows |
| KimokawaE! | — | — | Nintendo DS |
| Kinect Sports: Season Two | — | Rare Ltd. | — |
| Kinect: Disneyland Adventures | — | Asobo Studio, Frontier Developments | Microsoft Windows |
| King Arthur: The Role-Playing Wargame | real-time tactics | NeocoreGames | Microsoft Windows |
| King of Bowling | bowling video game | — | — |
| King of Casino | gambling video game | — | TurboGrafx-16 |
| King of Crabs | action game | — | Microsoft Windows, Android |
| King of Phoenix | — | — | Microsoft Windows, macOS |
| King of Seas | — | 3DClouds | Microsoft Windows |
| King of the Sandcastle | casual game, strategy video game, massively multiplayer online game | Sokpop Collective | Microsoft Windows, macOS |
| King Pins | action game, strategy video game | Sokpop Collective | Microsoft Windows, macOS |
| King's Bounty: Armored Princess | tactical role-playing game | Katauri Interactive | Microsoft Windows, macOS |
| King's Quest II | adventure video game | Q494614 | Apple IIGS, DOS, Atari ST |
| King's Quest VII | adventure video game | Q494614 | Classic Mac OS, Microsoft Windows, DOS |
| King's Questions | quiz video game | — | — |
| Kingdom Hearts 358/2 Days | action role-playing game, Japanese role-playing video game | Square Enix | PlayStation 3, Nintendo DS |
| Kingdom Hearts Coded | crossover fiction, puzzle video game | Square Enix | PlayStation 3, Nintendo DS |
| Kingdom Hearts Dark Road | — | — | Android |
| Kingdom Hearts Final Mix | action role-playing game | Square Enix | — |
| Kingdom Hearts HD 2.8 Final Chapter Prologue | action role-playing game | Square Enix | Microsoft Windows |
| Kingdom Hearts III | action role-playing game, crossover fiction | Square Enix | Microsoft Windows, Xbox Series X and Series S |
| Kingdom Rush Frontiers TD+ | tower defense | — | macOS |
| Kingdom Rush Origins | strategy video game | Ironhide Game Studio | Microsoft Windows, macOS, Linux, Android |
| Kingdom Rush Vengeance | tower defense | Ironhide Game Studio | Microsoft Windows, macOS, Android |
| Kingdom Two Crowns | — | — | Microsoft Windows, macOS, Linux |
| Kingdom Under Fire: A War of Heroes | real-time strategy | Phantagram | Microsoft Windows |
| Kingdom's Life | strategy video game | Strudio Company | Microsoft Windows |
| Kingdom: Classic | business simulation game, adventure video game | — | Microsoft Windows, macOS, Linux, Android |
| Kingdom: New Lands | simulation video game, strategy video game | — | Microsoft Windows, macOS, Linux |
| Kings Of Wings | casual game | — | Microsoft Windows |
| Kinja Run | roguelike, action game, endless runner game, role-playing video game | — | Android |
| Kinkoi: Golden Time | eroge, bishōjo game, visual novel, romance adventure game | Saga Planets | Microsoft Windows |
| Kirakira ♥ Idol Licca-chan | collectible card arcade game | — | — |
| Kirby Fighters 2 | — | HAL Laboratory | — |
| Kirby Super Star Ultra | action game, platform game | HAL Laboratory | Nintendo DS |
| Kirby's Block Ball | action game | HAL Laboratory | Game Boy |
| Kirby's Dream Buffet | battle royale game, racing video game | HAL Laboratory | — |
| Kirby's Return to Dream Land Deluxe | platform game | HAL Laboratory | — |
| Kirby's Star Stacker | puzzle video game | HAL Laboratory | Super Nintendo Entertainment System, Game Boy |
| Kirby: Triple Deluxe Match-Up | puzzle video game | Nintendo | web browser |
| Kishin Dōji Zenki | — | — | — |
| Kitrinos: Inside the Cube | adventure video game | — | Microsoft Windows |
| Kitten Sanctuary | — | — | Android |
| Kitto, Sumiwataru Asairo Yori mo, | visual novel | — | Microsoft Windows |
| Kitty May Cry | casual game, adventure video game, role-playing video game | — | Microsoft Windows |
| Klondike Solitaire Kings | casual game, simulation video game, adventure video game, strategy video game, role-playing video game, sports video game | Boogygames Studios | Microsoft Windows |
| Klonoa | platform game | Paon DP | Wii |
| Klonoa 2: Dream Champ Tournament | platform game | Namco | Wii U |
| Klustar | — | — | Game Boy Color |
| Knight Lore | — | Aackosoft, Stamper brothers, Rare Ltd. | Famicom Disk System, Nintendo Entertainment System, ZX Spectrum, Amstrad CPC, MSX |
| Knight Rider: The Game | action game, racing video game | Davilex Games | Microsoft Windows |
| KNIGHT SLAVE -The Dark Valkyrie of Depravity- | role-playing video game | — | Microsoft Windows |
| Knight Solitaire 2 | — | Creobit | Microsoft Windows |
| Knight Solitaire 3 | — | Creobit | Microsoft Windows |
| Knight Squad | action game | — | Microsoft Windows, macOS, Linux |
| Knight Squad 2 | action game | — | Microsoft Windows |
| Knighthood | — | Midoki | Android |
| Knightin'+ | adventure video game, action game, action-adventure game | — | Microsoft Windows, macOS, Linux, Xbox Series X and Series S |
| Knightmare | — | — | Atari ST |
| Knights College | visual novel | — | Microsoft Windows |
| Knights in the Nightmare | role-playing video game | Sting | Nintendo DS, PlayStation Portable, Android |
| Knights of Legends | adventure video game, strategy video game, role-playing video game, massively multiplayer online game | — | Microsoft Windows |
| Knights of Messiah | role-playing video game | — | Microsoft Windows |
| Knockdown the Ball | — | — | Microsoft Windows |
| Knockout Kings 2002 | boxing video game | — | — |
| Knockout Kings 2003 | boxing video game | — | Nintendo GameCube |
| Knowledge Is Power | — | PlayStation Mobile, Inc. | — |
| Knuckles the Echidna in Sonic the Hedgehog 2 | — | Sonic Team | — |
| Knytt | — | — | Microsoft Windows |
| Kobayashi Naru | — | — | ZX Spectrum, Commodore 64 |
| Kobe Bryant in NBA Courtside | basketball video game | Q3108816 | Nintendo 64 |
| KOF Sky Stage | shoot 'em up | — | — |
| KOF: Maximum Impact | 3D fighting game | SNK | — |
| Koh-Lanta : Les Aventuriers | party video game | Magic Pockets | Microsoft Windows |
| Kohate | adventure video game, action game, action-adventure game | — | Microsoft Windows |
| Koibumi Romantica | eroge, visual novel | chuable | Microsoft Windows |
| Koigoromo: Mazu wa Kore Kite! | eroge, visual novel | Catear | Microsoft Windows |
| Koihime Enbu | 2D fighting game | — | Microsoft Windows, arcade video game machine |
| Kokū Hyōryū Nirgends | role-playing video game | — | PC-FX, Microsoft Windows |
| Koloro | — | — | Microsoft Windows, macOS |
| Kombine | casual game, strategy video game | — | Microsoft Windows, macOS |
| Komorebi ni Yureru Tamashii no Koe | eroge, visual novel | — | Microsoft Windows |
| Kona | — | Parabole | Microsoft Windows, macOS, Linux, Xbox Series X and Series S |
| Konami Antiques: MSX Collection Vol. 1 | video game compilation | Konami | — |
| Konata yori Kanata made | visual novel | — | Microsoft Windows |
| Koneko mo Issyo | — | — | PlayStation Vita |
| Koneko Neko Neko | eroge, visual novel, harem | — | Microsoft Windows |
| Koni: The Secrets of Castle | casual game, adventure video game, action game, action-adventure game | — | Microsoft Windows |
| Konung: Legends of the North | — | Strategy First | Microsoft Windows |
| Kool-Aid Man | action game | Mattel Electronics | Intellivision |
| Kor | adventure video game, strategy video game, role-playing video game | — | Microsoft Windows |
| Korsakovia | — | The Chinese Room | Microsoft Windows |
| Kosmokrats | adventure video game | — | Microsoft Windows, Nintendo 3DS |
| Kosmonavtes: Academy Escape | casual game, adventure video game | — | Microsoft Windows, macOS, Linux |
| Kosodate Quiz: My Angel | — | — | WonderSwan |
| Krakels ABC: Storm Över Allemansland | educational video game | — | Classic Mac OS, Microsoft Windows |
| Krakout | — | Gremlin Interactive | ZX Spectrum, Amstrad CPC, MSX, Commodore 64 |
| Krazy Ivan | — | — | Microsoft Windows |
| Kristallijn | — | — | Microsoft Windows |
| Krusty's Fun House | — | Audiogenic | DOS, Nintendo Entertainment System, Super Nintendo Entertainment System |
| KSTG | adventure video game, action game, action-adventure game | — | Microsoft Windows |
| Kudos | — | Positech Games | Microsoft Windows |
| Kujaku Ō | — | Graphic Research Co., Ltd. | MSX 2, Nintendo Entertainment System |
| Kujlevka | adventure video game | — | Microsoft Windows, Linux |
| KUNAI | post-apocalyptic video game | TurtleBlaze | Microsoft Windows |
| Kunio-kun no Dodge Ball da yo: Zenin Shūgo | dodgeball video game | — | Super Nintendo Entertainment System, Wii U |
| Kuon no Kizuna | visual novel | — | — |
| Kura kura ~Classy Cranberry's~ | — | Atelier Kaguya | Microsoft Windows |
| Kurokami-sama's Feast | visual novel | Minato Soft | Microsoft Windows |
| KUUKIYOMI 2: Consider It More! - New Era | casual game, simulation video game | — | Microsoft Windows |
| KUUKIYOMI 4: Consider It | casual game, simulation video game | — | Microsoft Windows |
| Kwirk | puzzle video game | Q780528 | TurboGrafx-16, Famicom Disk System, Game Boy |
| Kyonshis 2 | action-adventure game | Thinking Rabbit | Nintendo Entertainment System |
| Kētai Shōjo | dating sim, visual novel | — | Microsoft Windows, mobile phone |
| Kōenji Joshi Soccer 2 | association football video game | — | Nintendo DS |
| Kōryū no Mimi | action game, beat 'em up | VAP Inc. | Super Nintendo Entertainment System |
| Kūdere Makai Princess Sara to Kyūsei Haramase Life! Suki na dake Shikyū ni Sosoide Ninshin Sasenasai | — | Norn | Microsoft Windows |