Music

An interactive reference map can be found here.

A playlist of all Rain World music can be found here. = Title Screen =

TitleRollRain - Main Menu Rain

 * Plays when the game opens. If the player skips to the title screen, it will play alongside Sundown.

RW_8 - Sundown (Theme I)

 * Plays on the title screen.

= Single Player =

RW_Intro_Theme - Pictures of the Past/Intro Theme

 * Plays during the opening cutscene.

Passages

 * Plays when the player goes to the passage screen when hibernating.

TH_SU - Threat: Outskirts

 * The region's threat music, which plays when the player is near hostile creatures.

NA_01 - Proxima

 * Plays in SU_A07 (the room before the scavenger toll in front of the Farm Arrays gate).

NA_40 - Unseen Lands

 * Plays in SU_A53 (the outdoor room to the right of the central karma flow room).

RW_1 - Urban Jungle

 * Plays in SU_B04 (the room immediately to the left of the central upper shelter).

RW_9 - Mud Pits

 * Plays in DS_B02 (the room immediately outside the gate to Outskirts).

RW_15 - Old Growth

 * Plays in DS_B01 (the room above the central flooded bottom room).

RW_38 - The Wet Moist

 * Plays in DS_B04 (the bridge room, immediately to the left of the top right shelter).

RW_51 - Swaying Fronds

 * Plays in DS_A26 (the room to the upper right of the leftmost large pipe).

TH_HI - Threat: Heavy Industrial

 * The region's threat music, which plays when the player is near hostile creatures.

BM_HI_GATE - Industrial Atrium

 * Plays in HI_B04 (the room immediately outside the gate to Outskirts).

RW_43 - Bio-engineering

 * Plays in both HI_B04 and HI_A07 (the room immediately outside the gate to Outskirts and the room to the right of it, respectively).

RW_50 - Mist Engine

 * Plays in HI_A18 (the first room on the path to Garbage Wastes, which has a pink tree, an open top, exits on the right and bottom, and two floating spheres)

TH_GW - Threat: Garbage Wastes

 * The region's threat music, which plays when the player is near hostile creatures.

RW_19 - Stone Heads

 * Plays in GW_C03.

RW_37 - Garbage City Shuffle

 * Plays in both GW_C02 and GW_C04.

RW_39 - Lack of Comfort

 * Plays in GW_D02.

RW_43 - Albino

 * Plays in GW_E01.

RW_52 - Garbage Worms

 * Plays in GW_B01.

TH_SL - Threat: Shoreline

 * The region's threat music, which plays when the player is near hostile creatures.

BM_SL_SHORE - Gate to the Shoreline

 * Plays in SL_B02, SL_D05 and SL_F01.

NA_11 - Digital Sundown/Moondown (Theme II)

 * Plays in SL_AI.

NA_21 - New Terra

 * Plays in SL_A06.

RW_18 - The Captain

 * Plays in SL_A05.

RW_46 - Lonesound

 * Plays in SL_D06.

BM_SH_CRYPTS - Memory Crypts

 * Plays in SH_B12.

NA_08 - Dark Sus

 * Plays in both SH_A24 and SH_B05.

NA_17 - Dripping Time

 * Plays in SH_A05.

NA_25 - Demonic Riser

 * Plays in SH_B17.

NA_34 - ELSE III/Four Needles Under Plentiful Leaves

 * Plays in SH_A08 (the Echo room) and the surrounding area if the player activates the region's Echo (Four Needles under Plentiful Leaves).

RW_58 - Lantern Mice

 * Plays in SH_C10.

RW_26 - Black Moonlight

 * Plays in SH_D01.

RW_40 - Floes

 * Plays in SH_E05.

RW_58 - Lantern Mice

 * Plays in SH_A21.

BM_UW_UNDERHANG - Underhang

 * Plays in UW_C03.

BM_UW_WALL - The Wall

 * Plays in UW_D07.

NA_28 - Stargazer

 * Plays in UW_H01.

NA_35 - ELSE IV/Six Grains Of Gravel, Mountains Abound

 * Plays in UW_A14 (the Echo room) and the surrounding area if the player activates the region's Echo (Six Grains of Gravel, Mountains Abound).

RW_55 - White Lizard

 * Plays in UW_D02.

TH_SS - Threat: Superstructure

 * The region's threat music, which plays when the player is near hostile creatures.

BM_DS_GATE - Drainage Duct

 * Plays in SS_B01.

NA_09 - Interest Pad

 * Plays in SS_A09.

NA_16 - Drastic FM

 * Plays in SS_F03.

NA_26 - Energy Circuit

 * Plays in SS_D03.

NA_41 - Random Gods (Theme III)

 * Plays in General Systems Bus (SS_E07 and SS_L01), getting louder as the player approaches the exit into Five Pebbles' chamber.

TH_CC - Threat: Chimney Canopy

 * The region's threat music, which plays when the player is near hostile creatures.

BM_CC_CANOPY - Clairvoyant Canopy

 * Plays in CC_A02.

NA_32 - ELSE I/Nineteen Spades, Endless Reflections

 * Plays in CC_C12 (the Echo room) and the surrounding area if the player activates the region's Echo (Nineteen Spades, Endless Reflections).

RW_48 - Wind Chimes

 * Plays in CC_B06.

RW_55 - Sky Sprite

 * Plays in CC_C11.

TH_SI - Threat: Sky Islands

 * The region's threat music, which plays when the player is near hostile creatures.

BM_SI_STRUT - Serpentine Struts

 * Plays in SI_B13.

NA_04 - Silicon

 * Plays in SI_B12.

NA_20 - Crystalline

 * Plays in SI_B11 and SI_D05.

NA_23 - Speaking Systems

 * Plays in SI_C06.

NA_38 - ELSE VII/Droplets Upon Five Large Droplets

 * Plays in SI_B11 (the Echo room) and the surrounding area if the player activates the region's Echo (Droplets upon Five Large Droplets).

RW_42 - Kayava

 * Plays in SI_D01.

RW_29 - Lovely Arps

 * Plays in both SI_A05 and SI_D03.

TH_LF - Threat: Farm Arrays

 * The region's threat music, which plays when the player is near hostile creatures.

NA_24 - Emotion Thread

 * Plays in LF_J01.

NA_30 - Distance

 * Plays in LF_D01.

NA_36 - ELSE V/A Bell, Eighteen Amber Beads

 * Plays in SI_B11 (the Echo room) and the surrounding area if the player activates the region's Echo (A Bell, Eighteen Amber Beads).

RW_14 - All That's Left

 * Plays in LF_A14.

RW_47 - Maze of Soil

 * Plays in LF_D08.

RW_49 - Nest in Metal

 * Plays in LF_A01.

RW_54 - Raindeer Ride

 * Plays in LF_H01.

NA_27 - Silent Construct

 * Plays in SB_D04, SB_F02 and SB_I01.

NA_32 - ELSE I/Nineteen Spades, Endless Reflections

 * Plays in SB_A14 (the max karma room) if the player has a maximum karma level of 10.

NA_33 - ELSE II/Two Sprouts, Twelve Brackets

 * Plays in SB_A10 (the Echo room) and the surrounding area if the player activates the region's Echo (Two Sprouts, Twelve Brackets).

NA_38 - ELSE VII/Droplets Upon Five Large Droplets

 * Plays in SB_D01.

RW_28 - Ferrous Forest

 * Plays in both SB_G02 and SB_G03.

RW_41 - Grumblebum

 * Plays in both SB_A03 and SB_H02.

RW_45 - Deep Energy

 * Plays in SB_F03.

RW_53 - Leviathan Cave

 * Plays in SB_J02.

VS_A_GOLD_SWIM - Gold Swim

 * Plays in the uppermost section of the Void Sea.

VS_B_BIG_OPEN - Big Open

 * Plays in the second and third section of the Void Sea.

VS_C_WORM_INFERNO - Worm Inferno

 * Plays alongside Big Open in the second section of the Void Sea.

VS_D_THE_RIDE - The Ride

 * Plays when the Void Worm grabs the player in the third section and drags them down to the final section.

VS_E_DEEP_GHOSTS - Deep Ghosts

 * Plays in the final section of the Void Sea, along with The Core. The two tracks form Deep Light (Theme IV).

VS_F_THE_CORE - The Core

 * Plays in the final section of the Void Sea, along with Deep Ghosts. The two tracks form Deep Light (Theme IV).

Deep Light

 * A track that is a combination of Deep Ghosts and The Core, which play simultaneously.

RW_Outro_Theme - Outro Theme

 * Plays during the final cutscene.

RW_8 - Sundown (Theme I)

 * Plays during the credits sequence.

= Arena =

RW_55 - White Lizard
= Unused =

RW_53 - Leviathan

 * Same song as RW_53 - Leviathan Cave, but louder.

TH_LF - CHORDS
= Releases =

Rain World - Songs and Rhythms
Selections from the Rain World Soundtrack. Available here.

Rain World - Ambients and Instrumentals
The second release of selections from the Rain World Soundtrack. Available here.

Alphas, Gems and Junk
"A pile of odds and ends from the Rain World OST that never made it into the other OST releases, for whatever reason". Available here.