SDI
SMS
SDI
Sega Master System
The emulator loads when you click — nothing to download
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Controls Keyboard → Sega Master System
Arrows / WASD D-Pad
Z Button 1
X Button 2
Enter Start / Pause
F Fullscreen
USB and Bluetooth gamepads are detected and mapped automatically as soon as you connect them.
About SDI
An arcade action game from Sega set in a Cold War-style space defense scenario, where you pilot a craft and battle enemy submarines and satellites across land, sea, and orbit.
Console
Sega Master System
