| Sinclair ZX Spectrum cass. |  Jet Set Willy: Perpetual Motion Hb | 2005 | Darth Melkor |
| Sinclair ZX Spectrum cass. | Jet Set Willy: The 2005 Megamix Hb | 2005 | Gromann, Daniel |
| Slot Machine | Jewel of Arabia | 2005 | IGT International Game Technologies Reno, NV, USA |
| Pachislot | Jewel Panic | 2005 | Okazaki Sangyo Co., Ltd. Japan |
| Slot Machine | Jewels of Africa | 2005 | WMS Gaming, Inc. Chicago, IL, USA |
| Sony PlayStation 2 disc | Jikkyou Powerful Pro Yakyuu 12 Ketteiban Model SLPM-66217 | 2005 | Konami Corp. Japan |
| Sony PlayStation 2 disc | Jikkyou Powerful Pro Yakyuu 12 Model SLPM-66061 | 2005 | Konami Corp. Japan |
| Pachinko | Jinzo Ningen Kikaider Model GSV3 | 2005 | Nishijin Japan |
| Pachinko | Jinzo Ningen Kikaider Model GSX3 | 2005 | Nishijin Japan |
| Pachinko | Jinzo Ningen Kikaider Model GXV3 | 2005 | Nishijin Japan |
| Sony PlayStation 2 disc | Jissen Pachi-Slot Hisshouhou! Aladdin II Evolution Model SLPM-66240 | 2005 | SEGA Corp. |
| Sony PlayStation 2 disc | Jissen Pachi-Slot Hisshouhou! Hokuto no Ken Plus Model SLPM-62577 | 2005 | SEGA Corp. |
| Sony PlayStation 2 disc | Jissen Pachi-Slot Hisshouhou! Onimusha 3 Model SLPM-66016 | 2005 | SEGA Corp. |
| Sony PlayStation 2 disc | Jissen Pachinko Hisshouhou! CR Hokuto no Ken SLPM-66241 P | 2005 | SEGA Corp. |
| PC/MS-Windows CD | Joint Operations - Combined Arms | 2005 | NovaLogic |
| PC/MS-Windows CD | Jokei Kazoku - Inbou 18 | 2005 | Silky's Japan |
| Medal video game | Joker Gold | 2005 | Unknown Korea |
| Slot Machine | Joker Roulette | 2005 | Top Counter Barcelona, Spain |
| Fruit Machine | Joker's Casino | 2005 | JPM International |
| Slot Machine | Joker's Gold | 2005 | IGT International Game Technologies Reno, NV, USA |
| Sinclair ZX Spectrum cass. | Journey to the Centre of the Earth Hb | 2005 | Wilson, Carl |
| Medal video game | Joy Cube | 2005 | BGG Professional Korea |
| Medal video game | 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 |
| 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 video game | 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 video game | Jurassic | 2005 | Unknown Korea |
| Slot Machine | Just Jewels | 2005 | AGI Austrian Gaming Industries Novomatic Group |
| Dedicated Console | Justice League | 2005 | Jakks Pacific, Inc. |
