Still in development, feedback is welcome. The current content is primarily focused on the first dimension, "Echo Realm." More dimensions and abilities are planned for future versions, with an expected total of 3 dimensions, 6 main bosses, and 5 abilities/artifacts.
Step out, listen to the echoes of the earth, and discover a world long forgotten.
Unknown Echoes is an adventure Mod centered around exploration, puzzle-solving, boss battles, and progressive ability growth.
You will open the gateway to the Echo Realm, tracking ancient echoes across ten distinct biomes, solving ancient mechanisms, defeating guardians, and gradually mastering three "Echo" powers, ultimately completing your personal "graduation" at the Cliffside Grand Archive.
Each main boss has a Guard Break mechanic: They heavily resist damage while their guard is up. You must use the arena's environmental mechanics to create a vulnerability window before you can deal effective damage.
| Main Boss | Arena | Unlocks Ability |
|---|---|---|
| Forgotten Colossus | Memory Pillar Courtyard (Echoing Forest) | Wind Echo |
| Abyssal Observer | Sunken Sanctum (Mirror Lake / Tidal Lighthouse Reef) | Tidal Echo |
| Mirror Guardian | Mirror Sanctum (Mirror Dust Corridor) | True Sight Echo |
| Guardian | Biome / Location |
|---|---|
| Storm Weaver | Floating Isles · Sky Observatory |
| Tidal Lamplighter | Tidal Lighthouse Reef |
| Mirror Dust Steward | Mirror Dust Corridor |
| Silent Priest | Muted Marsh · Silent Altar |
| Crystal Song Keeper | Crystal Song Grove · Crystal Song Grand Hall |
| Broken Bell Warden | Broken Bell Wasteland · Broken Bell Ruined Tower |
| Slumbering Bloom Warden | Slumbering Flower Field · Underground Greenhouse |
| Chief Lost Archivist | Echo Cliffs · Damaged Archive |
They are unlocked and upgraded based on your personal exploration progress.
| Artifact | Role |
|---|---|
| Storm Compass | Short-duration flight · Aerial maneuvering |
| Tidal Lantern | Survival sustainability |
| Echo Lens | Damage output · Detection |
| Biome | Defining Keywords |
|---|---|
| Echoing Forest | Entry-level, basic resources, main Wind line structures |
| Floating Isles | High-altitude wind erosion, wind-based materials, Storm Compass progress |
| Mirror Lake | Surface exploration, Tidal mainline entrance |
| Tidal Lighthouse Reef | Deep-water reefs, Tidal Lantern progress |
| Mirror Dust Corridor | Illusions, false/true layers, True Sight mainline enhancement |
| Muted Marsh | Oppressive environment, silence theme, pressure-resistant equipment |
| Crystal Song Grove | Musical crystals, crystal song materials |
| Slumbering Flower Field | Supply, merchants, low-combat recovery |
| Broken Bell Wasteland | Timer mechanisms, heavy enemies, mechanical materials |
| Echo Cliffs | Endgame, Grand Archive, second dimension prelude |
