| Medal game (video) |  Joy Cube Red | 2005 | BGG Professional Korea |
| Nintendo GameCube disc | Judge Dredd - Dredd vs Death Model DOL-GJDE-USA | 2005 | BAM! Ent. |
| Nintendo GameCube disc | Judge Dredd - Dredd vs Death Model DOL-GJDE-USA | 2005 | BAM! Ent. |
| Nintendo GameCube disc | Judge Dredd - Dredd vs Death Model DOL-GJDX-EUR | 2005 | Sierra Ent., Inc. USA |
| Pachislot | Juggler | 2005 | Kitac Kita Denshi Corp. Japan |
| PC/MS-Windows CD | Juiced | 2005 | T-HQ, Inc. Toy HeadQuarters |
| Microsoft XBOX disc | Juiced | 2005 | Unknown |
| Sony PlayStation 2 disc | Juiced Model SLES-53044 | 2005 | T-HQ, Inc. Toy HeadQuarters |
| Nintendo GBA cart. | Juka and the Monophonic Menace Model AGB-BJKE-USA | 2005 | SouthPeak Interactive, LLC |
| Nintendo GBA cart. | Juka and the Monophonic Menace Model AGB-BJKP | 2005 | Zoo Digital Publishing |
| Sky Gamestar game | Jumble Fever | 2005 | Sky Games |
| Medal game (video) | Jump Five Season | 2005 | Unknown Korea |
| Nintendo DS cart. | Jump Superstars Model NTR-AJSJ-JPN | 2005 | Nintendo Co., Ltd. Japan |
| Fisher-Price I Can Play Piano cart. | Jungle Boogie Model J7524 | 2005 | Fisher-Price |
| Slot Machine | Jungle Fury | 2005 | Konami Gaming, Inc. Las Vegas, NV, USA |
| Slot Machine | Jungle Fury Deluxe | 2005 | Konami Gaming, Inc. Las Vegas, NV, USA |
| Medal game (video) | Jurassic | 2005 | Unknown Korea |
| Slot Machine | Just Jewels | 2005 | AGI Austrian Gaming Industries Novomatic Group |
| Dedicated Console | Justice League | 2005 | Jakks Pacific, Inc. |
| Amstrad CPC cass. | Justin Hb | 2005 | CNGSOFT |
| Amstrad CPC 464 disk | Justin Hb | 2005 | CNGSOFT |
| Medal game (video) | JVIC III | 2005 | Unknown Korea |
| Pachinko | K-1 Premium Dynamite!! Model BNA | 2005 | Sammy Corp. Japan |
| Pachinko | K-1 Premium Dynamite!! Model MNA | 2005 | Sammy Corp. Japan |
| Pachinko | K-1 Premium Dynamite!! Model RNA | 2005 | Sammy Corp. Japan |
| Slot Machine | K-9 Cash | 2005 | IGT International Game Technologies Reno, NV, USA |
| Slot Machine | Kablooey! | 2005 | IGT International Game Technologies Reno, NV, USA |
| Pachislot | Kagetsu Densetsu | 2005 | Sankyo Tokyo, Japan |
| Pachinko | Kahara Tomomi to Minashigo Hacchi | 2005 | Bisty Japan |
| Nintendo DS cart. | Kahashima Ryuuta Kyouju no Nou wo Kitaeru Otona no DS Training for Adults | 2005 | Nintendo Co., Ltd. Japan |
| Pachinko | Kaibutsu-kun | 2005 | Daiichi Denshi |
| Medal game (video) | Kang Ta | 2005 | Unknown Korea |
| Sega Pico game |  Kanshuu Unou Image Training - Hiragana - Katakana | 2005 | Pony Canyon, Inc. Japan |
| Sony PSP UMD | Kao Challengers Model ULES-00146 | 2005 | Atari Europe S.A.S.U. |
| Nintendo GBA cart. | Kappa no Kai-kata - Kaatan Daibouken! Model AGB-BK8J-JPN(RK372-J1) | 2005 | Konami Corp. Japan |
| Microsoft XBOX disc | Karaoke Revolution - Party | 2005 | Unknown |
| Nintendo GameCube disc | Karaoke Revolution Party Model DOL-GK9E-USA | 2005 | Konami Digital Ent. Co., Ltd. |
| Sony PlayStation 2 disc | Karate Dou Oretachi Geasen Zoku Model SLPM-62628 | 2005 | Hamster Japan |
| Sinclair ZX Spectrum cass. | Kartyas Jatek Hb | 2005 | NyitraiSOFT |
| Medal game (video) | Katori Attack | 2005 | Amuzy Japan |
