| Sega Saturn CD |  Hexen - Beyond Heretic Model T-18612G | 1998 | GameBank |
| PC/MS-Windows CD |  Hexen II - Mission Pack - Portal of Praevus | 1998 | Activision, Inc. Los Angeles, CA, USA 47875 |
| Sega Saturn CD | Hexen Model T-25405H-50 | 1998 | GT Interactive Soft. Corp. NY, USA |
| PC/MS-Windows CD | Hexplore | 1998 | Ocean Soft., Ltd. 13156 |
| Arcade Video game | Hidden Catch | 1998 | Eolith Co., Ltd. |
| Nichibutsu High Rate DVD | High Rate DVD No.1: Mahjong Gal-pri - World Gal-con Grandprix | 1998 | Nichibutsu Nihon Bussan Co., Ltd. Osaka, Japan |
| Nichibutsu High Rate DVD | High Rate DVD No.2: Sengoku Mahjong Kurenai Otome-tai | 1998 | Nichibutsu Nihon Bussan Co., Ltd. Osaka, Japan |
| Nichibutsu High Rate DVD | High Rate DVD No.3: Junai - Manatsu no First Kiss | 1998 | Nichibutsu Nihon Bussan Co., Ltd. Osaka, Japan |
| Nichibutsu High Rate DVD | High Rate DVD No.4: Mahjong/Handafuda Cosplay Tengoku 5 | 1998 | Nichibutsu Nihon Bussan Co., Ltd. Osaka, Japan |
| Nichibutsu High Rate DVD | High Rate DVD No.5: Junai 2 - White Love Story | 1998 | Nichibutsu Nihon Bussan Co., Ltd. Osaka, Japan |
| Sega Saturn CD | High School Terra Story | 1998 | KID Kindle Imagine Develop |
| Slot Machine | High Speed | 1998 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Highroll Keno | 1998 | Powerhouse Technologies |
| PC/MS-Windows CD | Hilton Head 2 - The Golf Pro | 1998 | Empire Interactive Europe, Ltd. |
| Sony PlayStation CD |  Himiko-den - Renge Taikenban Model SLPM-80390 | 1998 | Hakuhodo |
| Sony PlayStation CD | Himitsu Kessha Q Model SLPS-01334 | 1998 | Right Stuff Corp. Japan |
| Sega Saturn CD | Himitsu Sentai Metamor V | 1998 | MYCOM Japan |
| Sony PlayStation CD | Himitsu Sentai Metamor V Deluxe Model SLPS-01626~7 | 1998 | MYCOM Japan |
| Sharp X68000 Series 5.25in. disk | Hiroshi II | 1998 | Rats Japan |
| Sony PlayStation CD | Hissatsu Pachi-Slot Station Model SLPS-01551 | 1998 | SUNSOFT Kounan, Japan |
| Sony PlayStation CD | Hissatsu Pachinko Station - Monster House Special Model SLPS-01577 | 1998 | SUNSOFT Kounan, Japan |
| Sony PlayStation CD | Hissatsu Pachinko Station 3 - Genshijin ga Ippai Model SLPS-01702 | 1998 | SUNSOFT Kounan, Japan |
| Sony PlayStation CD | Hissatsu Pachinko Station 3 - Genshijin ga Ippai Model SLPS-01741 | 1998 | SUNSOFT Kounan, Japan |
| Sony PlayStation CD |  Hissatsu Pachinko Station Model SLPS-01668 | 1998 | SUNSOFT Kounan, Japan |
| Sony PlayStation CD | Hiza no Ue no Partner - Kitty On Your Lap Model SLPS-01302 | 1998 | Culture Publishers |
| Nintendo 64 cart. | Holy Magic Century | 1998 | Konami Co., Ltd. Japan |
| Slot Machine | Honey Moon | 1998 | Sigma Enterprises, Inc. Tokyo, Japan |
| Sony PlayStation CD | Honkaku Hanafuda Model SLPS-01656 | 1998 | Altron Corp. |
| Sega Saturn CD | Honkaku Hanafuda Model T-16611G | 1998 | Altron Corp. |
| Sony PlayStation CD | Honkaku Igo Model SLPS-00986 | 1998 | Seta Co., Ltd. Japan |
| Nintendo Game Boy Color cart. | Honkaku Shougi - Shougi-ou Model DMG-AG8J-JPN | 1998 | Warashi, Inc. |
| Sony PlayStation CD | Honkaku Shougi - Shougi-ou Model SLPS-01594 | 1998 | Warashi, Inc. |
| Sega Saturn CD | Honkaku Shougi Shinan Wakamatsu Shougi Jyuku | 1998 | SIMS Co., Ltd. Japan |
| Sony PlayStation CD | Honkakuha Yonin Uchi - Mahjong Club Model SLPM-86082 | 1998 | HECT Hector Japan |
| Sony PlayStation CD | Honoo no Ryourinin Cooking Fighter Tao Model SLPS-01382 | 1998 | Nippon Ichi Soft., Inc. Japan |
| PC/MS-Windows CD | Hopkins FBI | 1998 | Dice Multimedia Europe B.V. |
| Sony PlayStation CD | Hoshi de Hakken!! Tamagotchi Model SLPS-01250 | 1998 | Bandai Co., Ltd. Japan |
| Nintendo Super Famicom cart. | Hoshi no Kirby 3 Model SHVC-AFJJ-JPN | 1998 | Nintendo Co., Ltd. Japan |
| Sony PlayStation CD | Hoshi no Oka Gakuen Monogatari - Gakuen-sai Model SLPS-01638 | 1998 | Media Works Japan |
| PC/MS-Windows CD | Hospitalized | 1998 | 13cm Japan |
