Trivia

Trivia is pulled from this page and used on the main page "Did you know" Section.

Outskirts

 * Outskirts was originally called Suburban
 * Outskirts was one of the 4 regions present in early alpha versions of the game.
 * Many of Outskirts' rooms have stayed the same since early builds.
 * The rightmost area of the map has no apparent features of interest, as it does not connect to any additional area and has no unique Unlockables.
 * In some earlier builds (such as the one shown in Rain World Alpha - PUPS!! at 1:17), SU_A40, the current right-most room of Outskirts, did further connect to the right. It's unknown where this leads.
 * It is possible for to reach the tutorial area.
 * There are numerous known methods to revisit the tutorial area after first leaving.

Drainage System

 * Drainage system was one of the 4 regions present in early alpha versions of the game.

Industrial Complex

 * Industrial Complex was originally called Heavy Industrial.
 * The implies that Industrial Complex may once have been a bone mask factory.
 * Industrial Complex has the highest number of unique region connections in-game.

Garbage Wastes

 * In GW_A14, (the Red Lizard icon.png Red Lizard unlock room), the water level does not actually cover the entire room, making it possible to sit inside the pipe connection at the top without drowning.

Shoreline

 * It is possible to bring Scavenger icon.png Scavengers into Shoreline by loading the region while in a Karma Gate room with them. They can then be found in LttM.
 * It is also possible for Leviathan icon.png Leviathans to eat Vulture icon.png Vultures.

Shaded Citadel

 * Shaded Citadel was originally called Shadow Urban. The region acronym in game files is SH.
 * In room SH_B11, there are 20 Coalescipede icon.png Coalescipedes that cannot reach the player due to level geometry.

Five Pebbles

 * When playing, Unfortunate Development is more challenging due to increased amounts of proto DLLs.
 * Unfortunate Devlopment is an entirely optional subregion.
 * It is possible to avoid Recursive Transform Array by taking a shortcut through the center of the map.
 * Creatures inside Five Pebbles return to shelters once the timer runs out, which can be exploited to travel through the region without encountering hazards.

Farm Arrays

 * Starving and then backflipping with a {{InlineIcon|Squidcada|White Squidcada]] allows for infinite flight by holding jump, which allows for safe passage over Worm Grass icon.png Worm Grass.

Subterranean

 * It is possible to scale the western fissure via a few methods, most commonly s and a or.
 * The western pit can also be scaled with an, or while starving and backflipping with a
 * It is possible, using TAS tools, to return to Filtration System after reaching the Depths.

Depths

 * There are multiple unintended ways to bypass the Guardians. With good timing it is possible to blind them with two flashbang fruits for long enough to run past. This was specifically patched out for in version 1.5.
 * The Guardians can also be bypassed by distracting them with a living creature. This works best with small living creatures such as Hazers or Vulture Grubs that can be swallowed and regurgitated repeatedly, aggravating the Guardians more quickly.
 * The exit can also be reached by manipulating the Guardians to throw the Slugcat straight upwards, then throwing objects to reach the pipe.
 * It is also possible to fully despawn the Guardians by interrupting their room loading time. This is considered the simplest and fastest method of the Guardian despawn and is used for any% speedruns.