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Play SDI - Strategic Defense Initiative (Japan, old, System 16A, FD1089B 317-0027) (Japan edition · Japanese) Online
SDI - Strategic Defense Initiative (Japan, old, System 16A, FD1089B 317-0027)
Play SDI - Strategic Defense Initiative (Japan, old, System 16A, FD1089B 317-0027) online. Move the satellite separately from its trackball aim and clear offensive waves to avoid a defensive warhead phase.
Browser play
Arcade — EmulatorJS controls
Default Player 1 keyboard mapping. Change keys in Controller Settings.
| Console button | Keyboard |
|---|---|
| ↑ / ↓ / ← / → | ↑ / ↓ / ← / → |
| RetroPad A / B / X / Y | Z / X / A / S |
| L / R | Q / E |
| Insert coin | V |
| START | Enter |
Open Controller Settings to configure your keyboard or gamepad. Touch controls are available on mobile.
How to Play SDI - Strategic Defense Initiative (Japan, old, System 16A, FD1089B 317-0027)
Quick start
- Move the satellite with the joystick.
- Place the crosshair with the trackball.
- Fire at the marked threat while evading.
- Clear the offensive wave or defend against the escaped warheads.
Controls
The joystick moves the satellite. The trackball moves the targeting crosshair independently. The firing action sends the satellite’s weapon toward that crosshair.
SDI - Strategic Defense Initiative (Japan, old, System 16A, FD1089B 317-0027) — About this game
SDI lets the satellite dodge independently from the crosshair that directs its weapons. The joystick moves the satellite while a trackball positions that aim, so maintaining a shot on a target does not require remaining on its collision course. The offensive section tries to clear every enemy; a complete clearance skips directly ahead, while escaped enemies create a defensive task protecting the homeland from warheads. Learn a short evasive movement while keeping the crosshair on one threat, then finish stragglers before they turn the next section into an incoming-missile defence.
Cheats
No cheats have been added for this edition.
Player verification and sources
Browser play was reviewed before this edition was published in the catalogue. The date below is the catalogue publication date, not the game’s original release date.
- Browser test and catalogue publication date
- Browsers and devices
- PC: Chrome, Edge and Firefox. Mobile: Chrome on Android and Safari on iPhone and iPad.
- Player engine and core
- EmulatorJS 4.3.0-pre · arcade
- Tested by
- rwEmulator
Sources and editorial basis
rwEmulator reviews edition metadata, release information, game manuals and first-hand browser-play notes. Available manuals are linked below; the editorial policy explains how facts are checked and corrections are handled.