Reactor

Reactor
This terrifying building came from a soviet submarine and sends powerful bolts of electricity arcing around the town with a deafening crackle. The only "hitch" is that it has to be repaired daily. If it is destroyed, the town and its surroundings are instantly vaporized, wiping everything off the map (where you'll be). The label reads: soviet design, assembled in « вшивый ».
Category	Buildings
Sub Category	Foundations
Blueprints Blueprint	Construction Blueprint (very rare!) very rare!
Parent building	Foundations Foundations
Defence	500
Action Points cost	100
Resource cost	Metal Support×15 Unshaped Concrete Blocks×2 Battery×10 Electronic component×4 Engine×1

A massive amount of defence on the cheap but only after finding a very rare blueprint and at a cost of required daily maintenance. This thing could go off at any second.