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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 Amiga Loading screen.
SDI: Strategic Defense Initiative Atari ST Satisfyign blast radius there
SDI: Strategic Defense Initiative Amiga If you make it to the end of the round, your combat statistics are shown.
SDI: Strategic Defense Initiative ZX Spectrum Being taken away having finished the stage

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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

Génération 4 Atari ST Dec, 1988 77 out of 100 77
Computer and Video Games (CVG) Commodore 64 Sep, 1991 72 out of 100 72
ASM (Aktueller Software Markt) Atari ST Nov, 1988 8 out of 12 67
Your Sinclair ZX Spectrum Mar, 1989 6 out of 10 60
Atari ST User Atari ST Feb, 1989 6 out of 10 60
The Games Machine (UK) Atari ST Jan, 1989 56 out of 100 56
GamesCollection SEGA Master System Jan 18, 2008 5.5 out of 10 55
Commodore Force Commodore 64 Aug, 1993 46 out of 100 46
Game Freaks 365 SEGA Master System 2000 3.5 out of 10 35
Computer Gaming World (CGW) SEGA Master System Aug, 1988 Unscored Unscored

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Contributed to by chirinea (42843), Martin Smith (66801) and LepricahnsGold (128117)