SDI (arcade game)

SDI
Developer(s)Sega
Publisher(s)Sega
Activision
Platform(s)Arcade, Amiga, Amstrad CPC, Atari ST, Commodore 64, Master System, ZX Spectrum
Release1987
Genre(s)Scrolling shooter

SDI - Strategic Defense Initiative, or simply titled SDI and sometimes known as Global Defense, is a horizontally scrolling shooter produced and released internationally in arcades by Sega in 1987. It was ported to Amiga, Amstrad CPC, Atari ST, Commodore 64, Master System, and ZX Spectrum. Players control a satellite and must destroy enemies by moving a crosshair over them and firing the satellite's weapons.