| Sega Master System cart. |  Galaxian | 199? | HiCom Korea |
| Sega Master System cart. |  Galaxy Force P | 1989 | Activision, Inc. Menlo Park, CA, USA 47875 |
| Sega Master System cart. | Galaxy Force Model 29001 P | 1989 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Master System cart. | Game Box Serie Corridas Model 028390 | 1994 | Tec Toy Industria de Brinquedos S.A. Brazil |
| Sega Master System cart. | Game Box Serie Esportes Radicais Model 023480 | 1994 | Tec Toy Industria de Brinquedos S.A. Brazil |
| Sega Master System cart. | Game Box Serie Lutas Model 028380 | 1994 | Tec Toy Industria de Brinquedos S.A. Brazil |
| Sega Master System cart. | Gang's fighter Model 021030 | 1986 | Tec Toy Industria de Brinquedos S.A. Brazil |
| Sega Master System cart. | Gangster Town Model 5074 | 1987 | SEGA of America, Inc. San Francisco, CA, USA |
| Sega Master System cart. | Gangster Town Model MK-5074-50 | 1987 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Master System cart. | Gauntlet Model 25006-50 P | 1990 | US Gold, Ltd. Birmingham, England 13442 |
| Sega Master System cart. | Gemitas Hb | 2018 | Cyttorak |
| Sega Master System cart. |  George Foreman's KO Boxing Model MK-27041-50 P | 1992 | Flying Edge |
| Sega Master System cart. | Geraldinho Model 021080 | 1994 | Tec Toy Industria de Brinquedos S.A. Brazil |
| Sega Master System cart. | Ghost House | 198? | Samsung Korea |
| Sega Master System cart. | Ghost House Model MK-4502-50 | 1986 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Master System cart. | Ghostbusters Model 5065 | 1987 | SEGA of America, Inc. San Francisco, CA, USA |
| Sega Master System cart. | Ghostbusters Model 5065 | 1989 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Master System cart. | Ghouls'n Ghosts Model 025.170 P | 1991 | Tec Toy Industria de Brinquedos S.A. Brazil |
| Sega Master System cart. | Ghouls'n Ghosts Model 7055 P | 1990 | SEGA of America, Inc. San Francisco, CA, USA |
| Sega Master System cart. | Ghouls'n Ghosts Model 7055 P | 1990 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Master System cart. | Global Defense Model 5102 P | 1988 | Tonka Corp. MN, USA |
| Sega Master System cart. | Global Defense Model MK-5102-50 P | 1988 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Master System cart. | Golden Axe Warrior | 1991 | Tec Toy Industria de Brinquedos S.A. Brazil |
| Sega Master System cart. | Golden Axe Warrior Model 7505 | 1990 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Master System cart. | Golden Axe Model 028060 | 1991 | Tec Toy Industria de Brinquedos S.A. Brazil |
| Sega Master System cart. | Golden Axe Model 9004 P | 1990 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Master System cart. | Golden Axe Model 9004 P | 1990 | SEGA of America, Inc. San Francisco, CA, USA |
| Sega Master System cart. | Golfamania Model 7502 | 1990 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Master System cart. | Golvellius | 1988 | Tec Toy Industria de Brinquedos S.A. Brazil |
| Sega Master System cart. | Golvellius - Valley of Doom Model 7017 | 1988 | Tonka Corp. MN, USA |
| Sega Master System cart. | GP Rider Model 9013 P | 1993 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Master System cart. | Great Baseball Model 5061 | 1987 | SEGA of America, Inc. San Francisco, CA, USA |
| Sega Master System cart. | Great Baseball Model MK-5061-50 | 1987 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Master System cart. | Great Basketball Model 5071 | 1987 | SEGA of America, Inc. San Francisco, CA, USA |
| Sega Master System cart. | Great Basketball Model MK-5071-50 | 1987 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Master System cart. | Great Football Model 5058 | 1987 | SEGA of America, Inc. San Francisco, CA, USA |
| Sega Master System cart. | Great Football Model G-1321 | 1987 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Master System cart. | Great Football Model MK-5058-50 | 1987 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Master System cart. | Great Golf Model 5057 | 1987 | SEGA of America, Inc. San Francisco, CA, USA |
| Sega Master System cart. | Great Golf Model 5057 | 1987 | SEGA Enterprises, Ltd. Tokyo, Japan |
