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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 In the defensive stage
SDI: Strategic Defense Initiative Amiga Title screen.
SDI: Strategic Defense Initiative Arcade Shoot the satellites.
SDI: Strategic Defense Initiative Amiga Loading screen.

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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

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Critic Reviews

neXGam SEGA Master System Feb 02, 2010 8.6 out of 10 86
ACE (Advanced Computer Entertainment) Atari ST Dec, 1988 844 out of 1000 84
The Games Machine (UK) SEGA Master System Apr, 1988 81 out of 100 81
Génération 4 Atari ST Dec, 1988 77 out of 100 77
ASM (Aktueller Software Markt) Atari ST Nov, 1988 8 out of 12 67
Amiga Computing Amiga Sep, 1989 64 out of 100 64
Atari ST User Atari ST Feb, 1989 6 out of 10 60
Computer and Video Games (CVG) ZX Spectrum Jul, 1991 59 out of 100 59
Computer and Video Games (CVG) Commodore 64 Jul, 1991 54 out of 100 54
Tilt SEGA Master System Mar, 1988 8 out of 20 40

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Contributed to by chirinea (40864), Martin Smith (62937) and LepricahnsGold (124923)