The Sinking City 2 Wiki - Maps
Arkham, Massachusetts
The game's entire setting -- a fictional Lovecraftian city devastated by a supernatural flood, filled with deranged survivors, ruined streets, decaying mansions, and abandoned hospitals. A large, maze-like environment distinct from the original Sinking City's setting of Oakmont.
Holloway Manor
A confirmed additional side mission location, included with the Premium Edition.
Arkham Fish Market
A confirmed location shown in extended gameplay footage -- once a bustling waterfront hub of merchants, dockworkers, fishermen, and travelers, now a decaying monument with rusting abandoned ships, flooded storefronts, and eldritch monstrosities stalking its walkways.