| Sega Mega Drive cart. |  Garou Densetsu - Shukumei no Tatakai Model G-4100 | 1993 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Arcade Video game |  Gee Bee | 1979 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Dreamcast GD |  Geist Force | 1999 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Gekka Mugentan Torico | 1996 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Arcade Video game | Get Bass - Sega Bass Fishing | 1997 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Arcade Video game | Get Bass - Sega Bass Fishing Deluxe | 1997 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Dreamcast GD | Get Bass Model HDR-0012 | 1999 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Dreamcast GD | Get!! Colonies Model HDR-0071 | 2000 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Game Gear cart. | GG Aleste II Model G-3330 | 1993 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Game Gear cart. | GG Doraemon - Noranosuke no Yabou Model G-3326 | 1993 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Game Gear cart. | GG Portrait - Pai Chen Model G-3387 | 1996 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Game Gear cart. | GG Portrait - Yuuki Akira Model G-3386 | 1996 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Ghen War Model 81001 | 1995 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Master System card |  Ghost House Model 4002 | 1986 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Mark III card | Ghost House Model C-512 | 1986 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Master System cart. | Ghost House Model MK-4502-50 | 1986 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Coin-op Misc. game | Ghost Hunters | 1994 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Master System cart. | Ghostbusters Model 5065 | 1989 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Mega Drive cart. | Ghostbusters Model G-4030 | 1990 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Mega Drive cart. | Ghouls'n Ghosts | 1990 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Mega-Tech cart. | Ghouls'n Ghosts Model 23 | 1989 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Master System cart. | Ghouls'n Ghosts Model 7055 P | 1990 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Dreamcast GD | Giant Gram - Zen Nihon Pro Wres 2 in Nihon Budoukan Model HDR-0005 | 1999 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega NAOMI cart. | Giant Gram 2 - All Japan Pro Wrestling In Nippon Budokan | 1999 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega NAOMI cart. | Giant Gram 2000 - All Japan Pro Wrestling 3 Brave Men of Glory | 2000 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Dreamcast GD |  Giant Gram 2000 - Zen Nihon Pro Wres 3 Eikou no Yuusha-tachi Taikenban | 2000 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Dreamcast GD | Giant Gram 2000 - Zen Nihon Pro Wres 3 Eikou no Yuusha-tachi Model HDR-0101 | 2000 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Arcade Video game | Gigas | 1986 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Arcade Video game | Gigas Mark II | 1986 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Medal mechanical game | Ginga Tetsudou 999 - Galaxy Express | 2000 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega SG-1000 game | Girl's Garden Model G-1037 | 1984 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Master System cart. | Global Defense Model MK-5102-50 P | 1988 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Mega Drive cart. | Go Net | 1992 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Arcade Video game | Goal Kick | 1974 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Pico game | Godzilla - Dokidoki Kaijuu Shima!! Model HPC-6027 | 1995 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Game Gear cart. | Godzilla - Kaijuu Daishingeki Model G-3430 | 1995 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Godzilla - Rettoushinkan | 1995 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Dreamcast GD | Godzilla Generations | 1998 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Dreamcast GD | Godzilla Generations - Maximum Impact Model HDR-0047 | 1999 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Mark III cart. | Gokuaku Doumei Dump Matsumoto Model G-1302 | 1986 | SEGA Enterprises, Ltd. Tokyo, Japan |
