| Kingdom Hearts - Chain of Memories | EU | 2005 |
Square Enix | Commercial |
| Klonoa 2 - Dream Champ Tournament | US | 2005-02 |
Namco | Commercial |
| Kappa no Kai-kata - Kaatan Daibouken! | JP | 2005-03 |
Konami | Commercial |
| Kessaku Sen! - Ganbare Goemon 1, 2 - Yuki Hime to Magginesu | JP | 2005-04 |
Konami | Commercial |
| Killer 3D Pool | EU | 2005-05 |
Zoo Digital Publishing | Commercial |
| Killer 3D Pool | US | 2005-05 |
Zoo Digital Publishing | Commercial |
| Konchuu Monster - Battle Master | JP | 2005-05 |
Culture Brain | Commercial |
| Konchuu Monster - Battle Stadium | JP | 2005-05 |
Culture Brain | Commercial |
| Kouchuu Ouja Mushiking - Greatest Champion e no Michi | JP | 2005-06 |
Sega | Commercial |
| Kidou Gekidan Haro Ichiza - Haro no Puyo Puyo | JP | 2005-07 |
Bandai | Commercial |
| Kim Possible | JP | 2005-07 |
Buena Vista Games | Commercial |
| Kim Possible 3 - Team Possible | US | 2005-07 |
Disney Interactive | Commercial |
| Konjiki no Gashbell!! The Card Battle for GBA | JP | 2005-07 |
Banpresto | Commercial |
| Konchuu no Mori no Daibouken - Fushigi na Sekai no Juunin-tachi | JP | 2005-08 |
Culture Brain | Commercial |
| Kunio-kun Nekketsu Collection 1 | JP | 2005-08 |
Atlus | Commercial |
| Kong - King of Atlantis | EU | 2005-10 |
Majesco Entertainment | Commercial |
| Kong - King of Atlantis | US | 2005-10 |
Majesco Entertainment | Commercial |
| Kunio-kun Nekketsu Collection 2 | JP | 2005-10 |
Atlus | Commercial |
| Kid Paddle | EU | 2005-11 |
Atari Europe | Commercial |
| Kid Paddle | EU | 2005-11 |
Atari Europe | Prototype |
| King Kong - The Official Game of the Movie | EU | 2005-11 |
Ubisoft | Commercial |
| Kong - The 8th Wonder of the World | US | 2005-11 |
Ubisoft | Commercial |
| Konjiki no Gashbell!! Yuujou no Zakeru - Dream Tag Tournament | JP | 2005-11 |
Banpresto | Commercial |