| Katekyoo Hitman Reborn! DS - Shinuki Max! Vongola Carnival!! (Japan) | |
| Katekyoo Hitman Reborn! DS - Vongola Shiki - Taisen Battle Sugoroku (Japan) | |
| Kawa no Nushi Tsuri - Komorebi no Tani, Seseragi no Uta (Japan) | |
| Kawaii Koinu DS (Japan) | |
| Kawaii Koinu DS (Japan) (Rev 2) | |
| Kawaii Koinu DS 2 (Japan) | |
| Kawaii Koinu DS 3 (Japan) | |
| Kawaii Koneko DS (Japan) | |
| Kawaii Koneko DS 2 (Japan) | |
| Kawaii Koneko DS 3 (Japan) | |
| Kayou Generation, The (Japan) | |
| Kazoku Minna de - Nihon Shiatsu Shikai Kanshuu - Raku Raku Shiatsu Navi (Japan) | |
| Keiba Navi - Umanosuke (Japan) | |
| Keiba Techou - Umanosuke 2 (Japan) | |
| Keiji J.B. Harold no Jikenbo - Manhattan Requiem & Kiss of Murder (Japan) | |
| Keiji J.B. Harold no Jikenbo - Murder Club (Japan) | |
| Keitai Sousakan 7 DS - Buddy Sequence (Japan) | |
| Kekkaishi - Karasumori Ayakashi Kidan (Japan) | |
| Kekkaishi - Kokubourou Shuurai (Japan) | |
| Keltis - Das Spiel von Reiner Knizia (Germany) | |
| Kemeko Deluxe! DS - Yome to Meka to Otoko to Onna (Japan) | |
| Kenkou Ouen Recipe 1000 - DS Kondate Zenshuu (Japan) | |
| Kenshuui Tendo Dokuta (Japan) | |
| Kenshuui Tendo Dokuta 2 - Inochi no Tenbin (Japan) | |
| Kero Kero 7 (Japan) | |
| Keroro Gunsou - Enshuu Da yo! - Zenin Shuugou Part 2 (Japan) | |
| Keroro RPG - Kishi to Musha to Densetsu no Kaizoku (Japan) | |
| Keshikasu-kun - Battle Kasu-tival (Japan) | |
| Ketsui Death Label - Kizuna Jigoku-tachi (Japan) | |
| Kid Paddle - Blorks Invasion (Europe) (Fr,Nl) | |
| Kid Paddle - Lost in the Game (France) | |
| Kidou Gekidan Haro Ichiza - Gundam Mahjong +Z - Sarani Dekiru You ni Natta Na! (Japan) | |
| Kidou Gekidan Haro Ichiza - Gundam Mahjong DS - Oyaji ni mo Agarareta Koto nai no ni! (Japan) | |
| Kidou Senshi Gundam 00 (Japan) | |
| Kids DS - Dekita yo! Mama. - Onnanoko (Japan) | |
| Kids DS - Dekita yo! Mama. - Otokonoko (Japan) | |
| Kiite Hajimeru - Eigo Kaiwa Training - Kikitore (Japan) | |
| Kikansha Thomas - DS de Hajimeru Chiiku Gakushuu (Japan) | |
| Kikansha Thomas - DS de Hajimeru Kokugo Sansuu Eigo (Japan) | |
| Kiku! Kaku! Kotoba o Fuyasu! - Hajimete no Eigo Training - Eitore (Japan) | |
| Kilari - Deviens une Star (Europe) (En,Fr,Es,It) | |
| Kilari - Na-san, Mon Meilleur Ami (Europe) (Fr,Es,It) | |
| Kim Possible - Global Gemini (Europe) (En,Fr,De,Es,It) | |
| Kim Possible - Global Gemini (USA) (En,Fr) | |
| Kim Possible - Kimmunicator (Europe) (En,Fr,De,Es,It) | |
| Kim Possible - Kimmunicator (USA) (En,Fr) | |
| Kimi ni Todoke - Sodateru Omoi (Japan) | |
| Kimi no Tame Nara Shineru (Japan) (En,Ja) | |
| Kimi no Yuusha (Japan) | |
| Kimochi yosa Rensa Puzzle - Trion Cube (Japan) | |