HollowedEcho.jar
HollowedEcho is a Forge horror mod for 1.20.1 that adds new dimensions, six monsters and more than ten scripted events to a survival world.
What it does
The mod adds several new dimensions, six new monsters and entities, and over ten events that trigger during play. The author notes that early demo feedback shaped later changes and bug fixes, and that the build was made in a short period, so the author asks players to report game breaking bugs. The content is built around a fictional story, and the author suggests taking breaks while playing.
The release contains jumpscares, frightening imagery and loud sound effects. The author recommends singleplayer with CRT and VHS shaders. The Y N T H E L G H T demo is included in the release. HollowedEcho requires Gekolib 4.24 to run.
Servers that run it need every player to install it too. Files are published for Forge only, and the latest file is 1.3.0 for 1.20.1, dated 2026-08-20. The mod is released under All rights reserved, so it is not open source.
Key features
New dimensions
Several dimensions are added to the world, each with its own terrain and atmosphere for exploration.
Six new monsters
Six new hostile mobs and entities are introduced, each with its own behavior during the story.
Scripted events
More than ten events trigger during play, changing the course of the world and the player's progress.
Demo included
The Y N T H E L G H T demo is bundled with the release, so players can try part of the content first.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Players who want a story driven horror experience on Forge. The author describes the mod as containing jumpscares and loud sound effects, so it suits players comfortable with those elements.
How it compares
Monsters from the backrooms is a Forge and NeoForge mod released under the MIT License, built for 1.20.1 – 1.21.1, and it runs on client and server. corrupted_worlds.jar [Horror] is a Forge mod for 1.20.1 under the MIT License, also client and server. Gowder is published for Forge and NeoForge across 1.20.1 – 1.20.4, under the MIT License and client and server. HollowedEcho is All rights reserved and is not open source, so its code cannot be reused under those terms.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| HollowedEcho.jar | Forge | 1.20.1 | Client and server | 2026-08-20 |
| Monsters from the backrooms | Forge and NeoForge | 1.20.1 – 1.21.1 | Client and server | 2026-08-31 |
| corrupted_worlds.jar [Horror] | Forge | 1.20.1 | Client and server | 2026-08-29 |
| Gowder | Forge and NeoForge | 1.20.1 – 1.20.4 | Client and server | 2024-07-23 |
Questions
Does HollowedEcho require Gekolib?
Does the server need HollowedEcho?
Is HollowedEcho available for versions other than 1.20.1?
In the catalog
HollowedEcho.jar is one of 11,058 Mobs mods on ModsFinder, and one of 6,527 Mobs mods for Forge. 34,764 mods support Minecraft 1.20.1.
Similar mods
What the author says
[EARLY DEMO, FEEDBACK WILL INFLUENCE CHANGES AND FIXING BUGS] This was made in Practically under a weeK, please let me know If there is game breaking bugs!
Official listing
- Modrinth page
- modrinth.com/mod/hollowedecho.jar
- Owner
- ShockyyDoc_MODS
- Published
- 2026-07-03
- Updated on Modrinth
- 2026-08-20
- Facts verified
- 2026-10-15
