| title | developer | year | game type | | pop. |
|---|
| K-On! Houkago Live!! | Sega | 2010 | PSP | rhythm | image | | label | |
| Kaboots | Honeyslug | 2009 | PSP | action/reflex | | | label | |
| Kaeru Batake de Tsukamaete Portable | Takuyo | 2010 | PSP | adventure Manga | image | | label | |
| Kaeru Batake de Tsukamaete: Natsu Senbokuryou Sansen Portable | Takuyo | 2011 | PSP | adventure Manga | image | | label | |
| Kameleon | Starfish | 2008 | PSP | | image | | | |
| Kamen Rider Climax Heroes Fourze | ? | 2011 | PSP | fighting | image | | label | |
| Kamen Rider Climax Heroes OOO | ? | 2010 | PSP | fighting | image | | label | |
| Kanon | Prototype | 2007 | PSP | adventure Manga | image | | | |
| Kao Challengers | Namco | 2006 | PSP | racing/driving | image | | | |
| Katekyoo Hitman Reborn! Battle Arena 2 - Spirits Burst | ? | 2009 | PSP | fighting | image | | label | |
| Kazook | Monte Cristo Multimedia | 2006 | PSP | action/reflex | image | | | |
| Kazuo | Sumo Digital | 2006 | PSP | puzzle | image | | | |
| Kenka Bancho: Badass Rumble | Spike | 2009 | PSP | action/reflex beat 'em up | image | subject | label | |
| Key of Heaven | Climax | 2005 | PSP | action/reflex role-play | image | subject | | |
| Kidou Keisatsu Patlabor: Kamubakku MiniPato | Bandai | 2005 | PSP | action/reflex | image | | label | |
| Kikokugai - The Cyber Slayer | Imo Moe Chinese Localization Group | 2010 | PSP | adventure | | | label | |
| Killzone Liberation | Guerilla Games | 2006 | PSP | action/reflex | image | subject | label | |
| King of Clubs | Oxygen Interactive | 2008 | PSP | action/reflex sport | image | subject | label | |
| Kingdom Hearts: Birth by Sleep | Square Enix | 2010 | PSP | action/reflex role-play | image | | label | |
| Kingdom Hearts: Birth by Sleep Final Mix | Square Enix | 2011 | PSP | action/reflex role-play | image | | label | |
| Knights in the Nightmare | Sting | 2010 | PSP | shooter strategy role-play | image | | label | |
| Koi to Senkyo to Chocolate | ASCII Media Works | 2012 | PSP | adventure | image | | label | |
| Koloomn | Cyber Front | 2004 | PSP | puzzle | image | | label | |
| Konneko | CyberFront | 2011 | PSP | adventure | image | | label | |
| Kono Aozora ni Yakusoku wo: Te no Hira no Rakuen | TGL | 2009 | PSP | adventure Manga | image | subject | label | |
| KoroKoro Koron | Cyber Front | 2006 | PSP | board game | image | | | |
| Kotoba no Puzzle - Mojipittan Daijiten | Namco | 2004 | PSP | puzzle | image | | | |
| Kurohyō: Ryū ga Gotoku Shinshō | syn Sophia | 2010 | PSP | action/reflex | image | | label | |
| Kuru Kuru Chameleon | Spike | 2006 | PSP | board game Manga | image | | | |
| Kurulin Fusion | ? | ? | PSP | | | | | |
