| Nintendo Game Boy Cart. |  Goukaku Boy Series - Shikakui Atama o Marukusuru - Rika Battle-Hen Model DMG-AE8J-JPN | 1999 | Imagineer Co., Ltd. Japan |
| Nintendo Game Boy Cart. | Goukaku Boy Series - Shikakui Atama o Marukusuru - Sansuu Battle-Hen Model DMG-AF3J-JPN | 1999 | Imagineer Co., Ltd. Japan |
| Nintendo Game Boy Cart. | Goukaku Boy Series - Shikakui Atama o Marukusuru - Shakai Battle-Hen Model DMG-AK8J-JPN | 1999 | Imagineer Co., Ltd. Japan |
| PC/MS-Windows CD | GP 500 | 1999 | MicroProse, Ltd. Bristol, UK 015352 |
| Arcade Video game |  Gradius IV | 1999 | Konami Co., Ltd. Japan |
| Arcade Video game | Gradius IV - Fukkatsu | 1999 | Konami Co., Ltd. Japan |
| Video Slot Machine | Gran Tesoro - Play 2000 | 1999 | Nova Desitec |
| Sony PlayStation CD |  Gran Turismo 2 - Test Drive Disc Model PAPX-90054 | 1999 | Sony Computer Ent., Inc. SCEI Japan |
| Sony PlayStation CD | Gran Turismo 2 Model SCPS-10116~7 | 1999 | Sony Computer Ent., Inc. SCEI Japan |
| Sony PlayStation CD | Gran Turismo 2 Model SCUS-94455/94488 | 1999 | Sony Computer Ent. America SCEA CA, USA |
| Sony PlayStation CD |  Gran Turismo Model SCPS-91128 | 1999 | Sony Computer Ent., Inc. SCEI Japan |
| Slot Machine | Grand Line | 1999 | Subsino Co., Ltd. |
| PC/MS-Windows CD | Grand Theft Auto - London 1969 | 1999 | Rockstar Games |
| Sony PlayStation CD | Grand Theft Auto - Mission Pack #1 - London 1969 Model SLES-01714 | 1999 | Take-Two Interactive |
| Sony PlayStation CD | Grand Theft Auto - Mission Pack #1 - London 1969 Model SLUS-0846 | 1999 | Rockstar Games |
| PC/MS-Windows CD | Grand Theft Auto 2 | 1999 | Take-Two Interactive |
| Sony PlayStation CD | Grand Theft Auto 2 Model SLES-01404 | 1999 | Take-Two Interactive |
| Sony PlayStation CD | Grand Theft Auto 2 Model SLUS-00789 | 1999 | Rockstar Games |
| Nintendo Game Boy Color cart. | Grand Theft Auto Model DMG-AOAE-USA | 1999 | Rockstar Games |
| Nintendo Game Boy Color cart. | Grand Theft Auto Model DMG-AOAP-EUR | 1999 | Rockstar Games |
| Arcade Video game | Grand Touring | 1999 | Fusence |
| Sony PlayStation CD | Grandia - Prelude Model SLPM-80297 | 1999 | ESP Soft. |
| Sony PlayStation CD | Grandia - Prelude Model SLPM-80436 | 1999 | ESP Soft. |
| Sony PlayStation CD | Grandia Model SCUS-94457/94465 | 1999 | Sony Computer Ent. America SCEA CA, USA |
| Sony PlayStation CD | Grandia Model SLPS-02124~5 | 1999 | ESP Soft. |
| Nintendo Game Boy Color cart. | Granduel - Shinki Dungeon no Hihou Model CGB-ADVJ-JPN | 1999 | Bottom Up Japan |
| Sega Dreamcast GD | Grauen no Torikago Kapitel 1 - Keiyaku Model HDR-0033 | 1999 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Dreamcast GD | Grauen no Torikago Kapitel 2 - Torikago Model HDR-0034 | 1999 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Slot Machine | Gravy Train | 1999 | IGT International Game Technologies Reno, NV, USA |
| Sony PlayStation CD | Growlanser Model SLPS-02380~1 | 1999 | Atlus Co., Ltd. Japan |
| PC/MS-Windows CD | Guardian of Darkness | 1999 | Cryo Interactive Ent. |
| Sony PlayStation CD | Guardian's Crusade Model SLES-01793 | 1999 | Activision, Inc. Los Angeles, CA, USA 47875 |
| Sony PlayStation CD | Guardian's Crusade Model SLES-01799 | 1999 | Activision, Inc. Los Angeles, CA, USA 47875 |
| Sony PlayStation CD | Guardian's Crusade Model SLES-01800 | 1999 | Activision, Inc. Los Angeles, CA, USA 47875 |
| Sony PlayStation CD | Guardian's Crusade Model SLES-01801 | 1999 | Activision, Inc. Los Angeles, CA, USA 47875 |
| Sony PlayStation CD | Guardian's Crusade Model SLUS-00811 | 1999 | Activision, Inc. Los Angeles, CA, USA 47875 |
| PC/MS-Windows CD | Guardian's Sword Plus | 1999 | TGL Technical Group Laboratory Japan |
| Sony PlayStation CD | Guilty Gear Model SLPS-02273 | 1999 | Arc System Works |
| Sony PlayStation CD | Guitar Freaks Model SLPM-86265 | 1999 | Konami Co., Ltd. Japan |
| Arcade Video game | Guitar Jam | 1999 | NAMCO, Ltd. Japan |
