SDI: Strategic Defense Initiative

Critic Score User Score
Atari ST
72
...
Amstrad CPC
...
...
SEGA Master System
60
2.8
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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 ZX Spectrum Finished that
SDI: Strategic Defense Initiative Commodore 64 Results of the offensive stage.
SDI: Strategic Defense Initiative Atari ST As ST disks were half the size of Amiga ones back then, the game came on 2 disks
SDI: Strategic Defense Initiative SEGA Master System Title screen (Japan)

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

neXGam SEGA Master System Feb 02, 2010 8.6 out of 10 86
The One Atari ST Nov, 1988 86 out of 100 86
Computer and Video Games (CVG) Commodore 64 Sep, 1991 72 out of 100 72
Crash! ZX Spectrum Jul, 1991 70 out of 100 70
Sinclair User ZX Spectrum Jul, 1991 70 out of 100 70
ASM (Aktueller Software Markt) Atari ST Nov, 1988 8 out of 12 67
The Games Machine (UK) Amiga Sep, 1989 57 out of 100 57
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
VideoGame SEGA Master System Mar, 1991 2 Stars2 Stars2 Stars2 Stars2 Stars 40

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Trivia

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Contributed to by chirinea (35495), Martin Smith (63071) and LepricahnsGold (102416)