Nintendo DS - K
- K-1 World GP
- Kabushiki Baibai Trainer Kabutore! Next
- Kachou Shima Kousaku DS - Dekiru Otoko no Love and Success
- Kageyama Hideo no Hanpuku Ondoku DS Eigo
- Kahashima Ryuuta Kyouju No Nou O Kitaeru Otona DS Training
- Kaitou Rousseau
- Kameleon
- Kamen Rider - Dragon Knight
- Kamen Rider Battle - Ganbaride Card Battle Taisen
- Kamen Rider Dragon Knight
- Kampf der Giganten - Drachen
- Kanji Sonomama DS Rakubiki Jiten
- Katekyoo Hitman Reborn! DS
- Katekyoo Hitman Reborn! DS Flame Rumble
- Katekyoo Hitman Reborn! DS Flame Rumble Gaikyoushuu
- Katekyoo Hitman Reborn! DS Flame Rumble Mukuro Kyoushuu
- Kawaii Koinu DS 2
- Kawaii Koneko DS
- Keiji J.B. Harold no Jikenbo - Satsujin Club
- Kekkaishi - Karasumori Ayakashi Kidan
- Kenshuui Tendo Dokuta 2 - Inochi No Tenbin
- Kim Possible
- Kim Possible - Global Gemini
- Kim Possible - Kimmunicator
- Kimi no Yuusha
- King Kong
- King of Clubs
- King of Fighters Sky Stage
- Kingdom Hearts 358/2 Days
- Kingdom Hearts Re -coded
- Kingdom Hearts Recoded
- Kirby - Canvas Curse
- Kirby - Mass Attack
- Kirby - Mouse Attack
- Kirby - Power Paintbrush
- Kirby - Squeak Squad
- Kirby - Squeak Squad!
- Kirby - Super Star Ultra
- Kirby Mass Attack
- Kirby Squeak Squad
- Kirby Super Star Ultra
- Knights in the Nightmare
- Kochkurs
- Konami Classics Series - Arcade Hits
- Konductra
- Kong - the 8th Wonder of the World
- Könige der Wellen
- KORG DS-10 Synthesizer
- Kousoku Card Battle - Card Hero
- Kreed
- Kung Fu Panda
- Kung-Fu Panda
- KuruKuru Chameleon DS
- Kurupoto Cool Cool Stars
- Kuwagata Tsumami - Kuttsuke! Tsumami Hako