Core Block

A core block is a block all other blocks of that system connect to. If it's destroyed, the entire sub-system loses its function, so it is vital to protect it well.

Core blocks include:
 * AI Mainframe for AIs
 * Firing Piece for CRAM Cannons
 * Advanced Firing Piece for Advanced Cannons
 * Multipurpose Laser for Lasers
 * Gearbox for Steam Engines