Time until SDI release!

Already released in Japan [JP] on Arcade

RegionTime leftPlatform
Japan [JP]Arcade
Japan [JP]Sega Master System
Europe [EU]Atari ST/STE
Europe [EU]Amiga
Europe [EU]ZX Spectrum
North America [NA]Commodore C64/128
Europe [EU]Amstrad CPC



SDI - Strategic Defense Initiative, or simply titled SDI and sometimes known as Global Defense. Players control a satellite and must destroy enemies by moving a crosshair over them and firing the satellite's weapons.