Much of the plot of the original Westworld concerns the systemic issues with the automaton hosts originating in Roman World and Medieval World before eventually spreading like a virus to West World.
It expanded upon Roman World and Medieval World, in addition to featuring “Futureworld” as a simulated space station.
But Westworld hasn’t even secured a second season yet, so any ideas surrounding an expanded universe would be pure speculation at this point, anyway.
Westworld premiered on Oct. 2 and its second episode, titled “Chestnut,” debuts Oct. 9 on HBO.