Yume 2kki:3D Underworld

3D Underworld
Basic Info
Regional Name(s)	FCバグステージ：赤い迷路エリア FC Bagu Sutēji: Akai Meiro Eria FC Bug Stage: Red Maze Area
Effects	EffectNone
Masks	FC Urotsuki
Events	None
Notable NPCs	None
Other
Connecting Areas	Kaleidoscope World Streetlight Docks Critter Village Marshmallow Shallows NoEntry⛔ Oblique Hell LockedCondition🔐 NoReturn➡️
BGM	🔊 2_30 🔊 e28 – Seahorse Room (No. 175B)
Map ID	1884
Map Type	Large, Looping, Platformer
Version Added	0.120d patch 10
Last Updated	0.126b patch 1
Author	qxy

3D Underworld is an area accessible through the cone house with the faucet in Marshmallow Shallows.

Map of the 3D Underworld.

Features

This area is a distinctive variation of FC Caverns that connects to several areas. Urotsuki's appearance will be altered. Though it shares the identical platforming movements of FC Caverns, 3D Underworld's structure has more of the same isometric, three-dimensional style of Oblique Hell, and also features the obstacle of red walls which periodically slide open and shut. These can be stopped from moving by equipping the Crossing effect. The Fairy, Spring or Bunny Ears effects are recommended to navigate and reach the other connections in this area.

From Marshmallow Shallows, the player will fall through a couple of screens, some of which have platforms leading to other areas. After falling to the bottom and passing through a moving platform, you can find a door with a dark blue, scrolling parallax background that leads to Critter Village.

By going slightly north of where you had initially landed, taking the west platform will lead to a short hallway with moving blocks, ending in a round portal with a colorful exit, leading to Kaleidoscope World. You can also choose to go north from here and reach another portal with a pale light shining over a black ocean, leading to Streetlight Docks.

Seahorse Room

It's possible to clip out of bounds using various effects, allowing you to explore the rest of the map, though you have to be careful to avoid the invisible warps scattered around that send you to the First-Person Maze. Clipping out of bounds helps reveal the fact that this world is an upside-down copy of Oblique Hell, and interestingly enough also shows that this world is looping, despite being closed off.

Traveling either east or west will eventually lead you to where the traincar usually is in Oblique Hell. Instead of finding the traincar though, you'll find 3 rows of coins that you can collect. Supposedly these coins were removed in version 0.124h, though as of version 0.125e patch 3, the coins are still present.

Going south of the coins will lead you to a set of upside down stairs in the wall where the stairs to the White Lily Path usually are in Oblique Hell. Clipping into the wall and landing on the stairs will take you to a small room with a rocky seahorse. The sound of a ringing telephone can be heard as you get closer to the seahorse. Leaving the seahorse room will take you back to the same stairs you entered from, now in Oblique Hell.

Directions

• The Nexus → Marijuana Goddess World → Color Cubes World → FC Caverns C → Home Within Nowhere → Pure White Lands → Lamplit Stones → Adabana Gardens/Field of Cosmos → Bubble World → Red Sewers → Marshmallow Shallows → 3D Underworld

If you have visited Red Sewers at least once and have the Cake effect:

• The Nexus → Urotsuki's Dream Apartments → Dressing Room → Fabric World → Guts World → Red Sewers → Marshmallow Shallows → 3D Underworld

With the Marginal and Cake effect, after visiting the Red Sewers and the balcony in Guts World at least once and unlocking the connection from Broken Faces Area to Dream Park:

• The Nexus → Library → Broken Faces Area → Dream Park → Guts World → Red Sewers → Marshmallow Shallows → 3D Underworld

Trivia

• All of qxy's hats can be equipped in this area, acting as Urotsuki's default appearance when no effects are equipped.
• Using the Teru Teru Bōzu effect here makes a question mark appear instead of making the area rain.
• Viewing this map in RPGMaker will reveal that this map's layout is identical to Oblique Hell, though flipped upside down.
  • Additionally, this map used to feature collectable coins when viewed in RPGmaker, accessible via clipping out of bounds. These same coins could also be found when viewing FC Caverns C. The coins got removed in version 0.126b.
• The background of the doorway leading to Critter Village is similar to that of Bubble World.
  • Prior to version 0.122g, said doorway lead to a vertically looping subarea of 3D Underworld known as the Glitch Nexus.
• Prior to version 0.122g, this area featured a fixed camera.
• An issue while playing on EasyRPG can cause the camera to shake while moving around.

Gallery

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  Portal to Critter Village.

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  Portal to Streetlight Docks.

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  Portal to Kaleidoscope World.

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  Coins hidden out of bounds in place of the traincar in Oblique Hell.

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  The hidden seahorse room accessed out of bounds.