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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 Commodore 64 I am firing my laser.
SDI: Strategic Defense Initiative Arcade Stage 1.
SDI: Strategic Defense Initiative Arcade Missile Command style action.
SDI: Strategic Defense Initiative Amstrad CPC Firing my laser

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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

The One Atari ST Nov, 1988 86 out of 100 86
ACE (Advanced Computer Entertainment) Atari ST Dec, 1988 844 out of 1000 84
Sinclair User ZX Spectrum Jul, 1991 70 out of 100 70
Power Play SEGA Master System Apr, 1988 6.5 out of 10 65
Your Sinclair ZX Spectrum Jul, 1991 64 out of 100 64
Your Sinclair ZX Spectrum Mar, 1989 6 out of 10 60
Computer and Video Games (CVG) ZX Spectrum Jul, 1991 59 out of 100 59
The Video Game Critic SEGA Master System Nov 14, 2000 C+ 58
Computer and Video Games (CVG) Commodore 64 Jul, 1991 54 out of 100 54
Commodore Force Commodore 64 Aug, 1993 46 out of 100 46

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Contributed to by chirinea (43093), Martin Smith (66764) and LepricahnsGold (128159)