Echo

''This page concerns the uses of Echoes. For their monologues, see the Echo/Dialogue page.''

The Echoes that Slugcat meets are the spiritual remnants of Rain World's previous civilized race, the Ancients, who appear to Slugcat as large black beings with golden scales and long snouts, appearing to be sitting in a fetal position. They are forever stuck between this world and transcendence. Six Echoes can be met throughout Slugcat's journey. Their names and locations are as follows:
 * Nineteen Spades, Endless Reflections, found at the highest point in Chimney Canopy, near the gate to Sky Islands.
 * Six Grains of Gravel, Mountains Abound, found atop The Wall region of The Exterior shortly after the player exits from the chamber of Five Pebbles.
 * Four Needles under Plentiful Leaves, found in a grotto underneath the eastern entrance to Shaded Citadel.
 * Droplets upon Five Large Droplets, found high up in Sky Islands, above the yellow lizard infested tunnel near the gate to Farm Arrays.
 * A Bell, Eighteen Amber Beads, found in Farm Arrays high above a patch of Worm Grass, near the entrance from Outskirts.
 * Two Sprouts, Twelve Brackets, found in Subterranean region as one enters from Farm Arrays, in a cave to the right.
 * Atop the Tallest Tower, found in its own titular area high up near the center of Metropolis. This is exclusive to Artificer.

=Gameplay= Echoes are non-hostile and will attempt to speak with Slugcat if they have the mark of communication, teleporting them back to their previous shelter once they are finished. They will also attempt to raise Slugcat's maximum karma tier up to a maximum of 10, and the player will awaken at their new maximum karma level. If the player meets an Echo before meeting Five Pebbles, their karma will increase by two on the first Echo encounter and one every next encounter until they achieve level 10. Echoes will always be found in a specific location, but will not be there every time. The player must go to the room the Echo appears at to trigger a flash of dark blue light, and then return at least a cycle later with either their maximum karma (or for some Echoes one below the maximum) to get the Echo to appear. The presence of an Echo is very obvious, as even at a distance the area will grow darker and unique music will play. As Slugcat gets close, flecks of gold start raining down and blue light is seen slowly moving across the screen. Enemies are typically not found during this time, and most creatures other than Slugcat that get too close are pacified, falling limp to the ground. If already given the gift of communication by Five Pebbles, the player receives a brief monologue from the Echo. If not, the player will be teleported back to the shelter almost immediately upon finding them.

Encountering an Echo
In order to encounter most of the Echoes, the player must visit the area where they reside twice. The first time, when the player gets near, only a flash of blue light is seen, and gameplay continues as normal. If they visit the area on a following cycle with a high enough karma level (a requirement which changes depending on your current maximum karma), the conditions described above will take effect and the player eventually meets the Echo. This is not the case for Six Grains of Gravel, Mountains Abound or Two Sprouts, Twelve Brackets, who are both found on their first visit regardless of karma level. When playing as, it is not necessary to visit the location of an Echo to make it active, as it will be present as long as the player has the required karma. Visiting an Echo location with insufficient karma as Hunter for the first time will instead trigger the same blue flash of light as seen in the other difficulties.

Trivia

 * It is possible to complete the game without going to Five Pebbles by talking to four of the Echoes, the first raising your maximum karma by 2, and all subsequent echoes raising it by 1. Reaching the maximum karma level this way earns the Pilgrimage achievement.
 * An Echo is the result of a being with many vices attempting to transcend the cycle of reincarnation using Void Fluid, and becoming stuck between this world and the next. Looks to the Moon notes that this is especially the case for those who are too arrogant or egotistical.
 * Scavengers or some other sentient beings seem to have been aware of the Echoes at some point, as a 'ghost' symbol appears near many of the Echo locations.
 * Scavengers are not pacified by Echoes.
 * The Downpour expansion added a new Passage called "The Pilgrim" which is gained by visiting all echos, Artificer and Saint having an additional one along with the base 6. This makes it more difficult to get than the similarly named and earned "Pilgrimage" achievement.