mod
Echo ProtocolMinecraft mod for 1.21.11
A psychological horror mod where the world remembers, imitates, and slowly replaces the player
- Latest version
- Echo Protocol 0.5.0-beta.2 Hotfix 2
- Minecraft
- 1.21.1 to 1.21.11
- Java
- Java 21+
- Loader
- Fabric
- Licence
- not stated
- Downloads
- 671
- Updated
- 2 mo ago
- Available on
- CurseForge
Minecraft versions
Every version Echo Protocol declares support for, newest first, with the Java runtime that version needs.
| Minecraft | Through | Java | Evidence | Released |
|---|---|---|---|---|
| 1.21.11 | Fabric | 21+ | declared | 9 Dec 2025 |
| 1.21.10 | Fabric | 21+ | declared | 7 Oct 2025 |
| 1.21.9 | Fabric | 21+ | declared | 30 Sept 2025 |
| 1.21.8 | Fabric | 21+ | declared | 17 Jul 2025 |
| 1.21.7 | Fabric | 21+ | declared | 30 Jun 2025 |
| 1.21.6 | Fabric | 21+ | declared | 17 Jun 2025 |
| 1.21.5 | Fabric | 21+ | declared | 25 Mar 2025 |
| 1.21.4 | Fabric | 21+ | declared | 3 Dec 2024 |
| 1.21.3 | Fabric | 21+ | declared | 23 Oct 2024 |
| 1.21.2 | Fabric | 21+ | declared | 22 Oct 2024 |
| 1.21.1 | Fabric | 21+ | declared | 8 Aug 2024 |
Download
From Echo Protocol’s own host. Nothing is re-hosted here.
Most recently published release
echo-protocol-0.5.0-beta.2-hotfix.2-mc1.21.11.jar · 0.5 MB · for 1.21.11 · Fabric
e0998cf47c19…Older versions17Hide older versions
- Echo Protocol 0.5.0-beta.2 Hotfix 1 — Minecraft 1.21.119 Aug 20261.21.110.4 MB
732b31853d6d…Get - Echo Protocol 0.5.0-beta.2 Hotfix 1 — Minecraft 1.21.9–1.21.109 Aug 20261.21.10, 1.21.90.4 MB
1824650123cc…Get - Echo Protocol 0.5.0-beta.2 Hotfix 1 — Minecraft 1.21.6–1.21.89 Aug 20261.21.8, 1.21.7, 1.21.60.4 MB
ceb1747c7ca0…Get - Echo Protocol 0.5.0-beta.2 Hotfix 1 — Minecraft 1.21.59 Aug 20261.21.50.4 MB
bcaf99be4d45…Get - Echo Protocol 0.5.0-beta.2 Hotfix 1 — Minecraft 1.21.49 Aug 20261.21.10.4 MB
373f6d187030…Get - Echo Protocol 0.5.0-beta.2 Hotfix 1 — Minecraft 1.21.2–1.21.39 Aug 20261.21.3, 1.21.20.4 MB
9404e0e4b045…Get - Echo Protocol 0.5.0-beta.2 Hotfix 1 — Minecraft 1.21.19 Aug 20261.21.10.4 MB
860dc854128a…Get - Echo Protocol 0.5.0-beta.2 for Minecraft 1.21.117 Aug 20261.21.110.4 MB
27bb187d4f21…Get - Echo Protocol 0.5.0-beta.2 for Minecraft 1.21.9–1.21.107 Aug 20261.21.10, 1.21.90.4 MB
7928c68ea272…Get - Echo Protocol 0.5.0-beta.2 for Minecraft 1.21.6–1.21.81 Aug 20261.21.8, 1.21.7, 1.21.60.4 MB
ecf7e7db4613…Get - Echo Protocol 0.5.0-beta.2 for Minecraft 1.21.531 Jul 20261.21.50.4 MB9 downloads
484340488674…Get - Echo Protocol 0.5.0-beta.2 for Minecraft 1.21.431 Jul 20261.21.40.4 MB
d0e8adf2cd29…Get - Echo Protocol 0.5.0-beta.2 for Minecraft 1.21.2–1.21.331 Jul 20261.21.3, 1.21.20.4 MB
81a53d4dad12…Get - Echo Protocol 0.5.0-beta.2 — The House Remembers30 Jul 20261.21.10.4 MB12 downloads
9001b345c8cf…Get - echo-protocol-0.4.1-alpha.jar30 Jul 20261.21.10.3 MB4 downloads
c7e86bea5290…Get - Echo Protocol v0.4.0-alpha — False Memories25 Jul 20261.21.10.2 MB19 downloads
31835d479365…Get - echo-protocol-0.3.0-alpha.jar14 Jul 20261.21.10.1 MB22 downloads
bdc608b6dd42…Get
Frequently asked
Does Echo Protocol work on Minecraft 1.21.11?
Yes. 1.21.11 is the newest Minecraft version Echo Protocol declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.
Which Minecraft versions does Echo Protocol support?
Everything the author has declared, from 1.21.1 up to 1.21.11. The full list is in the table above, with the Java runtime each version needs next to it.
Which platform or loader does Echo Protocol support?
Fabric. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.
Which Java version do I need for Echo Protocol?
Among the supported Minecraft releases above, the highest recorded requirement is Java 21 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.
How do I install Echo Protocol?
Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.
Where do I download Echo Protocol safely?
Start with the author's page on CurseForge, which is where the data here is synced from. MCReference does not host or repackage files. When available, recorded download links go to the source for that release; verify the publisher, filename and any available checksum before running it.
Works on the same versions
Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.
Is this information wrong or missing something? .