SDI (arcade game)

SDI
Arcade flyer
DeveloperSega R&D1
PublishersSega
Home computers
Activision
PlatformsArcade, Master System, Atari ST, Commodore 64, ZX Spectrum, Amiga, Amstrad CPC
Release
April 1987
  • Arcade
    • JP: April 1987
    • NA: 1987
    Master System
    • JP: October 24, 1987
    • NA/PAL: March 1988
    Atari ST, C64, ZX Spectrum
    Amiga, CPC
GenreScrolling shooter
ModesSingle-player, multiplayer

SDI: Strategic Defense Initiative, or simply SDI, is a 1987 horizontally scrolling shooter video game developed and published by Sega for arcades. It was ported to the Master System (released in North America and Europe under the name Global Defense), Amiga, Amstrad CPC, Atari ST, Commodore 64, and ZX Spectrum. Players control a satellite and must destroy enemies by moving a crosshair over them and firing the satellite's weapons.