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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 Stage 1, Offensive
SDI: Strategic Defense Initiative Atari ST Level Stats
SDI: Strategic Defense Initiative SEGA Master System You are killed
SDI: Strategic Defense Initiative Amstrad CPC I missed a missile and a city got nuked.

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
Computer and Video Games (CVG) SEGA Master System Apr, 1988 8 out of 10 80
Commodore Format Commodore 64 Jun, 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
The Games Machine (UK) Amiga Sep, 1989 57 out of 100 57
The Games Machine (UK) Commodore 64 May, 1989 56 out of 100 56
VideoGame SEGA Master System Mar, 1991 2 Stars2 Stars2 Stars2 Stars2 Stars 40
Game Freaks 365 SEGA Master System 2000 3.5 out of 10 35

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Contributed to by chirinea (36512), Martin Smith (62960) and LepricahnsGold (122025)