SDI Defense — Sid Meier’s Civilization VII | AntMag

The SDI Defense in Sid Meier’s Civilization VII protects your cities from nuclear missile units, rendering attacks with these weapons ineffective.

The SDI Defense in Sid Meier’s Civilization VII protects your cities from nuclear missile units, rendering attacks with these weapons ineffective.

The SDI Defense in Sid Meier’s Civilization VII protects your cities from nuclear missile units, rendering attacks with these weapons ineffective.

The SDI Defense in Sid Meier’s Civilization VII protects your cities from nuclear missile units, rendering attacks with these weapons ineffective.

Sid Meier’s Civilization VII

SDI Dfnse:

Learn about the SDI Defense in Sid Meier’s Civilization VII. Costs 200 resources to build and protects cities from nuclear missile units.

By teroqim·Originally published: May 2025·Updated 11 months ago·10 min read·Multi-source verified

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Walkthrough

1
Build the SDI Defense in your cities.
2
It costs 200 resources to build.
3
It requires 4 resources for maintenance each turn.
4
Cities with an SDI Defense are protected from nuclear missile units; attacks with these weapons will have no effect.
5
If you engage in a nuclear war, consider building one on your capital city.

Tips

While not always necessary, the SDI Defense offers a crucial advantage during nuclear warfare.
You can sell the SDI Defense for 200$.

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