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SDI: Strategic Defense Initiative

Critic Score User Score
ZX Spectrum
63
0.6
Amstrad CPC
...
0.6
Arcade
...
2.6
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Description

SDI: Strategic Defense Initiative is based around classic-style shoot 'em up action. It puts you in control of a satellite which must ensure that the wave of bombs aimed for the United States do not hit. Direction of motion and direction of fire are controlled independently - on the 16-bit versions you rotate the mouse left and right to direct the targeting, move it up and down to increase the range, and use the joystick to move the satellite and thus avoid any contact.

Each level is split into defensive and offensive stages. On defensive levels you must stop each unit as it heads towards the earth, a lá Missile Command. Offensive stages follow the old 'shoot it before it becomes a danger' philosophy, being free-flying shoot 'em up sections among a network of destructible (but worth saving) platforms.

Screenshots

SDI: Strategic Defense Initiative Atari ST Title screen
SDI: Strategic Defense Initiative SEGA Master System Introduction
SDI: Strategic Defense Initiative SEGA Master System Introduction
SDI: Strategic Defense Initiative ZX Spectrum High scores

Alternate Titles

  • "SDI - Now The Odds Are Even" -- Spanish title
  • "SDI" -- Official abbreviation
  • "Mobile SDI" -- Mobile Sega Ages title
  • "Global Defense" -- SEGA Master System title

User Reviews

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Critic Reviews

neXGam SEGA Master System Feb 02, 2010 8.6 out of 10 86
Computer and Video Games (CVG) SEGA Master System Apr, 1988 8 out of 10 80
Génération 4 Atari ST Dec, 1988 77 out of 100 77
Sinclair User ZX Spectrum Jul, 1991 70 out of 100 70
Commodore Format Commodore 64 Jun, 1991 64 out of 100 64
ACE (Advanced Computer Entertainment) SEGA Master System Nov, 1988 618 out of 1000 62
Crash! ZX Spectrum Feb, 1989 59 out of 100 59
The Video Game Critic SEGA Master System Nov 14, 2000 C+ 58
The Games Machine (UK) Commodore 64 May, 1989 56 out of 100 56
The Games Machine (UK) Atari ST Jan, 1989 56 out of 100 56

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Contributed to by chirinea (34963), Martin Smith (63061) and LepricahnsGold (96737)