AI War:AI Core World
An AI core world is heavily fortified: it has at least one Orbital Mass Driver and one Core Warhead Interceptor, and has two Warp Gates instead of one, along with a Mark III Fortress close to the Orbital Command Station.
The controlling AI is allowed to use a small part of its Strategic Reserve to defend a core world.
A Core World is eligible for housing a Planetary Subcommander.
A Core World is not necessarily controlled by the same AI controlling the adjacent homeworld.