S.D.I. - Strategic Defence Initiative (1988)(The Hit Squad)[re-release] ROM Download for ZX Spectrum (TAP). S.D.I. - Strategic Defence Initiative (1988)(The Hit Squad)[re-release] game is available to play online and download only on Roms Games. S.D.I. - Strategic Defence Initiative (1988)(The Hit Squad)[re-release] ROM for ZX Spectrum download requires an emulator to play the game offline. This Game is English (USA) Version and is the highest quality available.