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Metropolis is an Ancient city built on top of Five Pebbles' superstructure. After the Ancients ascended and left the world behind, the city became abandoned and derelict, with wildlife like the Scavengers settling in it. The city entrance's Karma gate is restricted to citizens only, requiring an ID drone to enter. Because of this, the Artificer is the only Slugcat that can enter Metropolis thanks to their drone, Sofanthiel.
Overseers are very common in this region, often projecting advertisements of different products used by the Ancients.
Instead of raining, the end of a cycle transitions day into night. This changes the threat music to a different track and increases the difficulty of spawns.
Although it does not rain, rainbows can still appear in the start of a cycle.
Metropolis has the acronym LC in game files, which stands for Lost City.
Metropolis is not completely removed outside of Artificer's campaign, and can be accessed by Monk, Survivor, and Gourmand during Expeditions. Because the player's initial spawn is random, there is a chance that they begin in Metropolis.
There have actually been several changes to make Metropolis easier and safer to navigate as these Slugcats.
If Metropolis is entered on any campaign other than the Artificer's, via the usage of dev tools, Scavengers and Elite Scavengers are entirely absent from the area, and only spawn in the large horizontal room adjacent to the boss room that would usually contain the Chieftain Scavenger. Notably, said Chieftain Scavenger is also absent. The Echo, however, is still present, and has the same dialogue as the Artificer's campaign, as well as granting the same benefits as a normal Echo, and counting towards both Echo-associated Passages.
As Looks to the Moon is not accessible in Artificer's campaign, and Metropolis' entrance is locked in other campaigns, the only way to get this dialogue is to spawn inside Metropolis in Expedition mode.
The Exterior 
Artificer being the only Slugcat that can access it.
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Five Pebbles' superstructure. After the Ancients ascended and left the world behind, the city became abandoned and derelict, with wildlife like the 
Scavengers settling in it. The city entrance's Karma gate is restricted to citizens only, requiring an ID drone to enter. Because of this, the Artificer is the only 
Slugcat that can enter Metropolis thanks to their drone, Sofanthiel.
Overseers are very common in this region, often projecting advertisements of different products used by the Ancients.
Echo.
Neurons, and 
Inspectors. Home of the 
Chieftain Scavenger.
- Artificer exclusive
Creatures
Elite Scavenger
Electric Spear • 
Singularity Bomb
Maps
Safari
Slugcat
Monk, 
Survivor, and 
Gourmand during Expeditions. Because the player's initial spawn is random, there is a chance that they begin in Metropolis.
Scavengers and 
Elite Scavengers are entirely absent from the area, and only spawn in the large horizontal room adjacent to the boss room that would usually contain the 
Chieftain Scavenger. Notably, said Chieftain Scavenger is also absent. The 
Echo, however, is still present, and has the same dialogue as the Artificer's campaign, as well as granting the same benefits as a normal Echo, and counting towards both Echo-associated Passages.
Metropolis Pearls to 
Looks to the Moon yields unique dialogue.
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