Creatures
Regions / Subregions
Objects
Achievements
Technical Terms
100

These quadrupedal, primate-like creatures, have a sense of tribalism, and eyes that flash many wild colors when blinded by a flashbang.

What is a Scavenger?

100

This subregion is the spawn location of Inv, where he spawns during a pre-cycle.

What is Memory Crypts?

100

This object can heavily poison arthropods, but can be tasty to some mammalian life.

What is a Spore Puff?

100

This achievement is acquired by getting a passage of the same name, where you must hibernate for 5 cycles at maximum karma.

What is The Survivor?

100

While also being a movement option for slugcat, this term refers to generating a random number, particularly to generate a true-false outcome.

What is a Roll?

200

These creatures have the most variant creature types in the game (aside from Lizards), with a total of 7 variants.

What is a Centipede?

200

This is the only area in the game with naturally spawning Blizzard Lizards.

What is The Surface?

200

This object is sometimes referred to as a "Paincone." These objects are the only weapons used by Scavengers that can be swallowed (Aside from cherry bombs).

What is a Beehive?

200

You receive The Journey achievement when you meet this being.

What is Five Pebbles?

200

A measure of distance. At the native screen resolution, a (blank) is the width of one pixel. A tile is always 20 (blank)s wide.

What is a Unit?

300

These creatures are one of the few that can hold a vendetta against the player, even though it has no reputation system as a species.

What is a Vulture?

300

This region is the smallest region in the game, with 82 screens in total.

What is Industrial Complex?

300

This item can be created using Tardigrades, and is quite powerful in the right use cases.

What is a Poison Spear?

300

Beating the game as Artificer gives this achievement.

What is Closure?

300

Sometimes referred to as a frame in standard conversation, this unit of time is separate from graphical frame rate, and is approximately 1/40 of a second. 

What is a Tick?

400

This creature is more afraid of standard Vultures than it is of both King Vultures and Red Centipedes, even though standard Vultures do not prey on this creature, due to its size.

What is a Green Lizard?

400

In one of the western entrances to this area, rain doesn't flood the tunnels if you don't have DLC, allowing you to remain there indefinitely.

What is Filtration System?

400

This object only has a cosmetic purpose, but is considered a key item, and seems especially significant to a certain iterator.

What is the Cloak?

400

There are this many Echo achievements.

What is 6?

400

The state an object or room is in when it is first loaded, with simpler physics and AI than realized objects or rooms

What is Abstract / Abstractized?

500

This creature was inspired by the paintings of a famous Spanish Painter, and therefore has a name inspired by said painter.

What is a Miros Bird?

500

This area is referred to as CL within the game files, and is only accessible in Saint's campaign.

What is Silent Construct?

500

This object has the highest value to scavengers of all items, actually having double the trade value of a pearl. They are hard to access, but you get a bundle of 3 at a time.

What is an Inspector Eye?

500

Name every single lizard you are required to kill in order to receive the Dragon Slayer achievement within Vanilla.

Green Lizards, Pink Lizards, Blue Lizards, White Lizards, Yellow/Orange Lizards and Black Lizards

500

The set of processes, besides graphical updates, that comprise Rain World's gameplay, including AI, player input, and physics.

What is Simulation?