When the heads of the two mechanical axe-wielders shattered.
The components throughout their bodies also lost the processing commands from their brains.
The mechanical energy that had been about to erupt violently instantly dissipated, leaving them sprawled helplessly on the ground.
Ling Zhan slowly withdrew his fist and calmly stepped into the Steel Castle, filled with mechanical steam.
The moment he entered the city.
His view abruptly widened.
As far as the eye could see, building after building made of machinery and steel continuously operated, spewing billowing black smoke into the sky.
The wailing hum echoed throughout the entire Steel Castle.
Filthy, greasy waste engine oil permeated the streets and alleys, while the air was filled with the extremely pungent stench of mechanical rust.
This was a fully mechanized medieval castle, yet at the same time, it was a city of discarded filth capable of inflicting terrifying environmental pollution.
The dense smoke hanging over the castle proclaimed that, if this castle were placed in the outside world, it would completely pollute the surrounding area in less than a day.
These houses and towers already resembled the dilapidated buildings Ling Zhan had encountered in the Metal Slug game from his previous life.
"Intruder detected... Intruder detected..."
At this moment.
Within this city of pollution, mechanical monsters with extremely high defenses emerged from the buildings one after another. Pairs of mechanical pupils equipped with red ultraviolet scanners focused their gaze on the castle gates.
Even more horrifying was...
Quite a few of these mechanical monsters were mechanical entities modified from zombies.
Before their deaths, these zombies should have been the citizens of this Steel Castle.
But after it became a Secret Realm, they were slaughtered by the Steel Castle's intelligent system, turned into zombies, and then fitted with mechanical armor.
Thus, they