| PC/MS-Windows CD |  Gimjin Gamja-ui Aengnan Gamja Guchul Jakjeon | 1998 | Dong Seo Game Channel Korea |
| NEC PC-98/MS-Windows CD | Gin Seisen-Shin Guynarock R 18 | 1998 | Sogna Japan |
| Arcade Video game | Gindama Shoubu Deluxe Dennou Gindama Series | 1998 | Nakanihon, Inc. Nagoya, Japan |
| Arcade Video game | Gindama Shoubu Dennou Gindama Series Model NM505-1 | 1998 | Nakanihon, Inc. Nagoya, Japan |
| Sony PlayStation CD | Ginga Eiyuu Densetsu Model SLPS-01358 | 1998 | Tokuma Shoten Intermedia, Inc. Japan |
| Sony PlayStation CD | Ginga Ojousama Densetsu Yuna - Final Edition Model SLPS-01451 | 1998 | Hudson Soft. Hudson Group Japan |
| NEC PC-9821 CD | Girigiri Paradise 18 | 1998 | May-Be Soft. Japan |
| Sega Saturn CD | Girl Doll Toy - Tamashii wo Kudasai | 1998 | Xuse |
| PC/MS-Windows CD | Global Domination | 1998 | Psygnosis, Ltd. |
| Sony PlayStation CD |  Global Domination Model SLUS-00721 | 1998 | Psygnosis, Ltd. |
| Nintendo Game Boy Color cart. | Glocal Hexcite Model DMG-AICJ-JPN | 1998 | Nec InterChannel, Ltd. Japan |
| Nintendo 64 cart. | Glover | 1998 | Hasbro Interactive, Inc. |
| PC/MS-Windows CD | Glover | 1998 | Hasbro Interactive, Inc. |
| Nintendo Game Boy Cart. | Go! Go! Hitchhike Model DMG-AJHJ-JPN | 1998 | J-Wing |
| IBM PC/AT DOS CD |  Gobliiins | 1998 | CTO S.p.A. Italy |
| Nintendo Game Boy Cart. | God Medicine - Fukkoku Ban Model DMG-AGHJ-JPN | 1998 | Konami Co., Ltd. Japan |
| Arcade Video game | God of War | 1998 | Afega |
| Pinball | Godzilla | 1998 | SEGA Pinball, Inc. Melrose Park, IL, USA |
| Sony PlayStation CD | Godzilla - Trading Battle Model SLPS-01470 | 1998 | Toho Co., Ltd. Japan |
| Sega Dreamcast GD | Godzilla Generations | 1998 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sony PlayStation CD | Goiken Muyou II Model SLPS-01542 | 1998 | KSS Media Ent. Co. Japan |
| Sinclair ZX Spectrum cass. | Going Critical | 1998 | Adventure Probe Soft. |
| IBM PC/AT DOS CD |  Gold Games 3 | 1998 | TopWare Interactive AG |
| Slot Machine | Gold Touch Multi-Game | 1998 | Cadillac Jack Duluth, GA, USA |
| Pachislot | Golden Bell | 1998 | Bellco Corp. Japan |
| Pachislot | Golden Bell 30-Pai | 1998 | Bellco Corp. Japan |
| Pinball | Golden Cue - Tournament Edition | 1998 | SEGA Pinball, Inc. Melrose Park, IL, USA |
| PC/MS-Windows CD | Golden Goal 98 | 1998 | Take-Two Interactive |
| Sony PlayStation CD | Golden Goal 98 Model SLES-01222 | 1998 | Take-Two Interactive |
| Applied Technology Microbee cass. | Golden Idol | 1998 | Unknown |
| Nintendo 64 cart. | Golden Nugget 64 | 1998 | Electronic Arts CA, USA 14633 |
| Video Slot Machine | Golden Ra | 1998 | Aristocrat Leisure Industries Pty, Ltd. |
| Arcade Video game | Golden Tee '98 | 1998 | Incredible Technologies, Inc. Rolling Meadows, IL, USA |
| Arcade Video game | Golden Tee '98 Tournament Edition | 1998 | Incredible Technologies, Inc. Rolling Meadows, IL, USA |
| Arcade Video game | Golden Tee Tournament - Diamond Edition | 1998 | Incredible Technologies, Inc. Rolling Meadows, IL, USA |
| Sony PlayStation CD | Golgo 13 - 1: Carlyle no Yabou Model SLPS-01712 | 1998 | Daiki |
| Sony PlayStation CD | Golgo 13 - 2: Mienai Guntai Model SLPS-01713 | 1998 | Daiki |
| Arcade Video game | Good | 1998 | Unknown |
| Sony PlayStation CD | Goryuujin+Electro Model SLPS-01620 | 1998 | ASK Kodansha Co., Ltd. Japan |
| Sony PlayStation CD | Goujin Senki Model SLPS-01471 | 1998 | Tonkin House Japan |
