Civilization Wiki
Civilization Wiki

BackArrowGreen.png The list of buildings

SDI Defense (Civ2).png An SDI Defense is a building in Civilization II that protects everything within three spaces of the city from attack by Nuclear Missiles.

Its full name is Strategic Defense Initiative Defense.


Pericles head (Civ6).png Share your wisdom!

How do you use SDI Defense?
Let the world know by editing this section. Sprite edit-pencil.png

Civilopedia entry[]

Historically, research in the area of warfare has seen the development of powerful new weapons closely followed by the development of defenses to counteract the weapons' destructive power. The development of nuclear weapons seemed to be the exception to this rule: for the first time, mankind had created a weapon to which there was apparently no effective defense. SDI (Strategic Defense Initiative), however, could be the answer to this problem. Using laser-equipped orbital satellites or ground-launched ABMs (Anti-Ballistic Missiles) to intercept and destroy enemy nuclear missiles in mid-air, the SDI Defense offers the first hope of negating the threat posed by nuclear missiles.

Civilization II Buildings

AirportAqueductBankBarracksCapitalizationCathedralCity WallsCoastal FortressColosseumCourthouseFactoryGranaryHarborHydro PlantLibraryMfg. PlantMarketplaceMass TransitNuclear PlantOffshore PlatformPalacePolice StationPort FacilityPower PlantRecycling CenterResearch LabSAM Missile BatterySDI DefenseSS ComponentSS ModuleSS StructuralSewer SystemSolar PlantStock ExchangeSuperhighwaysSupermarketTempleUniversity