In the cyber city, the "Mystical Engineer" plays a critical function. The cyber city has once been built on the foundations of alien technology.  A mystical engine must be operated by the planet's most intelligent engineer to keep the energy and network running. Because they're working with extraterrestrial technology that's considerably more advanced than anything humans have created with it, this solitary engineer runs the risk of wiping out the whole race if he causes the engine to malfunction. The engine can only be controlled by one person since it requires a neural link to keep it running. When power is required, the engineer must solve challenges at the engine's core. The greater the amount of power required, the more complicated the challenge becomes. The engineer devotes his life to the cause and cannot be replaced until the previous one has been removed due to the engine rejecting its host or until the engineer has deceased.

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