| Pachislot |  Hirake Gomakko | 2003 | Abilit Japan |
| Sony PlayStation 2 disc | Hissatsu Pachinko Station V7 Model SLPS-20279 | 2003 | SUNSOFT Kounan, Japan |
| Sony PlayStation 2 disc | Hissatsu Pachinko Station V8 Model SLPS-20316 | 2003 | SUNSOFT Kounan, Japan |
| Nintendo GameCube disc | Hitman 2 - Silent Assassin | 2003 | Eidos Interactive |
| Slot Machine | Hocus Poker | 2003 | WMS Gaming, Inc. Chicago, IL, USA |
| Arcade Video game | Hog Wild | 2003 | Uniana Seoul, Koera |
| Pachislot | Hokuto no Ken | 2003 | Sammy Corp. Japan |
| Slot Machine | Hole In One Auto Combo | 2003 | Total Amusement Korea |
| Slot Machine | Hollywood Squares - Premier Night | 2003 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Hollywood Squares - Prize Spin | 2003 | WMS Gaming, Inc. Chicago, IL, USA |
| Sony PlayStation 2 disc | Homerun Model SLES-51812 | 2003 | Phoenix Games |
| PC/MS-Windows CD | Homeworld 2 | 2003 | Sierra Ent., Inc. USA |
| Slot Machine | Hooray for Hollywood | 2003 | Aruze Corp. Japan |
| Video Slot Machine | Hoot Loot Enhanced Video Slot | 2003 | IGT International Game Technologies Reno, NV, USA |
| Video Slot Machine | Hoot Loot Video Slot | 2003 | IGT International Game Technologies Reno, NV, USA |
| Sinclair ZX Spectrum cass. | Hop 'n' Chop Hb | 2003 | Cronosoft |
| Slot Machine | Horizon Triple Play Poker | 2003 | IGT International Game Technologies Reno, NV, USA |
| Slot Machine | Horse King III | 2003 | Unknown Korea |
| Redemption mechanical game | Horse King Prize | 2003 | Unknown Korea |
| PC/MS-Windows CD | Horse Racing Manager | 2003 | BigBen Interactive |
| PC/MS-Windows CD | Hoshizora Planet - Yume Hako | 2003 | DO Corp. Japan |
| Sony PlayStation CD | Hot Shot Model SLES-04050 | 2003 | Phoenix Games |
| Nintendo GBA cart. | Hot Wheels - World Race Model AGB-BHWE-USA | 2003 | T-HQ, Inc. Toy HeadQuarters |
| Nintendo GBA cart. | Hot Wheels - World Race Model AGB-BHWP | 2003 | T-HQ, Inc. Toy HeadQuarters |
| Nintendo GameCube disc | Hot Wheels - World Race Model DOL-GHRE-USA | 2003 | T-HQ, Inc. Toy HeadQuarters |
| Pachislot | Hotarea - The Adventure of Depths of the Earth | 2003 | Yamasa Japan |
| Nintendo GameCube disc | Hudson Selection Vol. 2 - Star Soldier Model DOL-GJSJ-JPN | 2003 | Hudson Soft. Hudson Group Japan |
| Nintendo GameCube disc | Hudson Selection Vol. 3 - PC Genjin Model DOL-GP4J-JPN | 2003 | Hudson Soft. Hudson Group Japan |
| Nintendo GameCube disc | Hudson Selection Vol. 4 - Takahashi Meijin no Bouken Jima | 2003 | Hudson Soft. Hudson Group Japan |
| Nintendo GBA cart. | Hugo - Bukkazoom! Model AGB-AZHP-EUR | 2003 | ITE Media |
| Sony PlayStation CD |  Hugo - The Evil Mirror Model SLUS-01559 | 2003 | XS Games |
| PC/MS-Windows CD | Hulk | 2003 | Vivendi Universal Games, Inc. |
| Sky Gamestar game | Hulk | 2003 | Sky Games |
| Nintendo GameCube disc | Hulk Model DOL-GHKE-USA | 2003 | Universal Interactive Studios, Inc. |
| Sony PlayStation 2 disc | Hulk Model SLES-51508 | 2003 | Universal Interactive Studios, Inc. |
| Bandai WonderSwan Color cart. | Hunter X Hunter - Greed Island Model SWJ-BANC39 | 2003 | Bandai Co., Ltd. Japan |
| Nintendo GBA cart. | Hunter X Hunter - Minna Tomodachi Daisakusen!! Model AGB-A8NJ-JPN | 2003 | Konami Corp. Japan |
| Pachislot | Hyena | 2003 | Baltec Japan |
| Pachinko | Hyper Chokkimon | 2003 | Daiichi Denshi |
| Fruit Machine | Hypnotic | 2003 | Vivid Gaming England |
