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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 Amstrad CPC Stage 01, Offensive half
SDI: Strategic Defense Initiative Atari ST Differnet backdrop on level 2
SDI: Strategic Defense Initiative ZX Spectrum Slotting between the platforms
SDI: Strategic Defense Initiative Commodore 64 I was hit and destroyed.

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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

User Reviews

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Critic Reviews

The One Atari ST Nov, 1988 86 out of 100 86
Génération 4 Atari ST Dec, 1988 77 out of 100 77
Sinclair User ZX Spectrum Jul, 1991 70 out of 100 70
Crash! ZX Spectrum Jul, 1991 70 out of 100 70
Commodore Format Commodore 64 Jun, 1991 64 out of 100 64
The Games Machine (UK) Atari ST Jan, 1989 56 out of 100 56
The Games Machine (UK) Commodore 64 May, 1989 56 out of 100 56
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
VideoGame SEGA Master System Mar, 1991 2 Stars2 Stars2 Stars2 Stars2 Stars 40

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Contributed to by chirinea (40492), Martin Smith (62806) and LepricahnsGold (124426)