Rubicon

Rubicon is an endgame region exclusive to the Downpour DLC. It is very similar to Depths in scenery. is the only Slugcat that can access it.

Overview
Rubicon is a strange realm, appearing to be an amalgam of the Depths and all the other regions of the game, including those that no longer exist in the Saint's time like the Shaded Citadel and The Exterior. It is filled to the brim with the deadliest predators and other lethal hazards. The environment is dark, with glowing golden flecks and a dark red background.

Many of Rubicon's rooms are filled with Void Fluid that kills any non-natives on contact, including. Some of them have a tide effect that alters the fluid's height, flooding paths with it. A few rooms have the fluid flowing in inverse and pooling up upwards. Some rooms have s in them, which block all connections to the room until killed. Others have large gaps that require 's flight ability and tongue to navigate. Many rooms in Rubicon express other elements of the game, such as low gravity rooms and flooded rooms. Some are just boss fights, for example, a small room with a, a  , and 4 s that need to be defeated.

Background Karma symbols scattered throughout the area grant the  max karma on contact.

Trivia

 * Some of the creatures and objects that spawn in Rubicon have a golden hue instead of their normal color. This has been seen with, , s, s and s.
 * Rubicon has the acronym HR in game files, which stands for Hell Region. The region's early development name was Stygian Depths.