| Slot Machine |  Jackpoteers | 2005 | IGT International Game Technologies Reno, NV, USA |
| Slot Machine | Jade Elephant | 2005 | WMS Gaming, Inc. Chicago, IL, USA |
| Microsoft XBOX disc | Jade Empire | 2005 | Unknown |
| Microsoft XBOX disc | Jade Empire (Limited Edition) | 2005 | Unknown |
| Nintendo GBA cart. | James Pond - Codename RoboCod Model AGB-AJDE-USA | 2005 | Valcon Games |
| Nintendo GBA cart. | James Pond - Codename RoboCod Model AGB-AJDP | 2005 | Play It |
| Nintendo DS cart. | James Pond 2 - Codename: RoboCod Model NTR-AJPP-UKV | 2005 | Play It |
| Fisher-Price I Can Play Piano cart. | Jammin' Jungle Safari Model K4653 | 2005 | Fisher-Price |
| Redemption mechanical game | Janken-man Max Attack | 2005 | XCEL |
| Medal video game | Janus | 2005 | GM Electronic Co., Ltd. Korea |
| Handheld game | Jeopardy! | 2005 | Hasbro Interactive, Inc. |
| Sony PSP UMD | Jet de GO! Pocket | 2005 | Taito Corp. Japan |
| Sinclair ZX Spectrum cass. | Jet Set Willy 64 Hb | 2005 | Elliott, John |
| Sinclair ZX Spectrum cass. | Jet Set Willy 64: Manic Miner Hb | 2005 | Elliott, John |
| Sinclair ZX Spectrum cass. | Jet Set Willy Again Hb | 2005 | Filsoft |
| Sinclair ZX Spectrum cass. | Jet Set Willy in Paris Hb | 2005 | Ast, Hervé France |
| Sinclair ZX Spectrum cass. | Jet Set Willy: Maria on Tour Hb | 2005 | BaSe1 PrOdUcTiOnZ |
| Sinclair ZX Spectrum cass. | Jet Set Willy: Mind Control Hb | 2005 | Gromann, Daniel |
| 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 |
