Pipeyard is a region consisting of various tunnels, pipes, and flooded caves, with open spaces near the surface. It serves as a connection to several other regions.
Pipeyard is an amalgam of various open rooms, gaping holes, broken-down drills, and linear plots of terrain. Many indoor rooms are filled with complex arrays of piping. The upper right half of the region has a large number of Centipedes, making it one of the few locations to have Adult Centipedes as Survivor and Monk. The lower sections of Pipeyard are dim and partially submerged, harboring large numbers of Monster Kelp and Black Lizards.
Pipeyard serves as an alternative to Garbage Wastes, with additional region connections. It allows for a competent Slugcat to travel across the entire world within mere cycles, but many of its paths are only one-way.
Sump Tunnel serves as the connection to the Shoreline gate. The left half consists of dark, water-filled pipes, with some sections fully submerged. The right half resembles the underground portion of Shoreline and is inhabited by albino Jetfish.
Andrew's Basement
SPOILER WARNING: Inv This section contains major plot details from Inv. If you have not made significant progress, completed the game as Inv, or solved their riddle, then read no further!
Andrew's Basement is only available in Inv's campaign. It features very little aside from a dead end, with some graffiti depicting the More Slugcats team.
Veiled Northstar, the song that plays in the Sump Tunnel subregion, is a remix of an unused song found in the AGJ album, which went by the name SubSubSub.
Centipedes, making it one of the few locations to have 
Adult Centipedes as 
Survivor and 
Monk. The lower sections of Pipeyard are dim and partially submerged, harboring large numbers of 
Monster Kelp and 
Black Lizards.
Garbage Wastes, with additional region connections. It allows for a competent Slugcat to travel across the entire world within mere cycles, but many of its paths are only one-way.
All
Hunter 
Artificer 
Spearmaster
Gourmand
Rivulet
Saint
Shoreline gate. The left half consists of dark, water-filled pipes, with some sections fully submerged. The right half resembles the underground portion of Shoreline and is inhabited by albino 
Jetfish.
SPOILER WARNING: Inv
Inv's campaign. It features very little aside from a dead end, with some graffiti depicting the More Slugcats team.
Maps
Creatures
Strawberry Lizard 
Eel Lizard 
Lilypuck 
Pearl
Regions
Pipeyard
the region's Colored Pearl indicate it was an abandoned drill site for mining Void Fluid.
