| Sega Master System cart. |  Dead Angle Model 7030 P | 1989 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Deadalus | 1995 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Mega Drive cart. |  DecapAttack Model 1027-50 | 1991 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | DecAthlete for SegaNet Model GS-7110 | 1997 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega ST-V cart. | Decathlete Model 610-0373-15 | 1995 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Decathlete Model 81115 | 1996 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | DecAthlete Model GS-9096 | 1996 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD |  DecAthlete Satakore Model GS-9150 | 1997 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Game Gear cart. | Deep Duck Trouble Starring Donald Duck Model 1205 | 1994 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Game Gear cart. | Deep Duck Trouble Starring Donald Duck Model 2514 | 1994 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Master System cart. | Deep Duck Trouble Starring Donald Duck Model 9022 | 1993 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Deep Fear | 1998 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Deep Fear Model GS-9189 | 1998 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Deep Fear Model MK81804-50 | 1998 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Game Gear cart. | Defenders of Oasis Model 2503 | 1992 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Arcade Video game | Defense Model 317-0028 | 1987 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Mega Drive cart. | Demolition Man Model T-81486-50 | 1995 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Dennou Senki Virtual-On | 1996 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Dennou Senki Virtual-On for SegaNet | 1996 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Arcade Video game | Depthbomb | 1978 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Pachinko | Derby Day | 196? | SEGA Enterprises, Ltd. Tokyo, Japan |
| Video Slot Machine | Derby Day | 1991 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Arcade Video game | Derby Owners Club | 1999 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Arcade Video game | Derby Owners Club 2000 | 2000 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Dreamcast GD |  Derby Tsuku - Derby Ba wo Tsukurou! Taikenban | 2000 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Dreamcast GD | Derby Tsuku - Derby Ba wo Tsukurou! Model HDR-0084 | 2000 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Slot Machine | Derby Windsor Series | 19?? | SEGA Enterprises, Ltd. Tokyo, Japan |
| Arcade Video game | Desert Breaker | 1992 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Game Gear cart. | Desert Speedtrap Starring Road Runner and Wile E. Coyote Model 2442 | 1994 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Master System cart. | Desert Speedtrap Starring Road Runner and Wile E. Coyote Model 7122 | 1993 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Arcade Video game | Desert Tank | 1994 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Slot Machine | Deuce's Wild | 199? | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Game Gear cart. | Devilish Model 015.340 | 1992 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Game Gear cart. | Devilish Model 2321 | 1992 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Slot Machine | Diamond 3 Star Type A | 1959 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Slot Machine | Diamond 3 Star Type B | 1959 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Slot Machine | Diamond 3 Star Type C | 1959 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Slot Machine | Diamond 4 Star Type A | 196? | SEGA Enterprises, Ltd. Tokyo, Japan |
| Slot Machine | Diamond 4 Star Type B | 196? | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Pico game | Die Abenteuer des Löwen Königs Model 49037-18 | 199? | SEGA Enterprises, Ltd. Tokyo, Japan |
