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Carpet RMS Addition

by Conflux Union

Carpet RMS Addition, a Fabric add-on for the Carpet mod, ports several vanilla behaviors from newer and older Minecraft versions and adds controls for entity packets and spawning.

FabricGNU Lesser General Public License v3.0 or laterOpen source1.17.1 – 1.21.6

What it does

Carpet RMS Addition extends Carpet with settings that change how certain game behaviors work. Some settings restore behavior from earlier releases, such as end portal platform item drops, fireball explosion credit, and falling block logic from 1.18.2 onward. Other settings control server load: packets for chosen entities and particles can be intercepted to save network throughput, and entities on a blacklist can be stopped from spawning naturally or from using portals.

Spawning and redstone are also covered. Block and sky light levels can be overridden for natural monster generation, which is useful when designing end-of-light farms. Dispensers, droppers and note blocks can be made to check the state of blocks placed by a player and to trigger silently, and note blocks can be set to one of two modes that differ in whether they play sound. Fake players use offline UUIDs rather than querying the Mojang API, which prevents server freezes when that API is slow or unreachable.

Carpet RMS Addition is a Fabric mod and requires Carpet. It is published for 1.17.1, 1.20.1, 1.20.4, 1.21.1, 1.21.4 and 1.21.6 under the GNU Lesser General Public License v3.0 or later, and is open source.

Key features

  1. Behavior ports

    Settings restore end portal platform drops, fireball explosion credit and falling block behavior from other Minecraft versions.

  2. Packet interception

    Update and move packets for a chosen list of entities, and generated particles, can be intercepted to reduce network use.

  3. Spawn control

    A blacklist stops listed entities from spawning naturally, and block and sky light levels can be overridden for monster generation.

  4. Redstone block behavior

    Dispensers, droppers and note blocks can check the state of blocks a player places and trigger without sound.

Compatibility

Latest build for each game version and loader.

1.21.6v2.3.2-mc1.21.6
1.21.4v2.3.2-mc1.21.4
1.21.1v2.3.2-mc1.21.1
1.20.4v2.3.2-mc1.20.4
1.20.1v2.3.2-mc1.20.1
1.17.1v2.3.2-mc1.17.1
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 1

CarpetTake full control over your vanilla game
Required

How it compares

Full comparison

REMS-Carpet-Addition is a Fabric mod for 1.19.4 – 26.3, optional on client or server, under a custom license and not open source. Carpet Addons Not Found is server-side only, open source under the MIT License and published for 1.17.1 – 1.21.11. Carpet TIS Addition is optional on client or server, open source under the GNU Lesser General Public License v3.0 only and covers 1.14.4 – 26.3.

ModLoadersGame versionsEnvironmentUpdated
Carpet RMS AdditionFabric1.17.1 – 1.21.6Not published2026-08-31
REMS-Carpet-AdditionFabric1.19.4 – 26.3Client or server, optional2026-10-12
Carpet Addons Not FoundFabric1.17.1 – 1.21.11Server-side only2026-01-16
Carpet TIS AdditionFabric1.14.4 – 26.3Client or server, optional2026-09-16

Questions

Does Carpet RMS Addition need Carpet?

Yes. Carpet is a required dependency, and Carpet RMS Addition is a Fabric mod that extends it.

Which Minecraft versions have files?

Files are published for 1.17.1, 1.20.1, 1.20.4, 1.21.1, 1.21.4 and 1.21.6. The latest Fabric file is v2.3.2-mc1.21.6 for 1.21.6.

Does the mod change the spawn rules of monsters?

It can. Block and sky light levels can be overridden for natural monster generation, and a blacklist can stop chosen entities from spawning naturally.

In the catalog

Carpet RMS Addition is one of 29,952 Game mechanics mods on ModsFinder, and one of 19,630 Game mechanics mods for Fabric. 13,625 mods support Minecraft 1.21.6.

More from Conflux Union

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What the author says

Ports the behavior of end portals from 1.21 pre1, where the end platform drops items when breaking blocks. Makes /data get return an entity's inNetherPortal, or, if the entity is a boat, also ticksUnderwater.
Conflux Union, on the Modrinth page

Official listing

Owner
Conflux Union
Published
2025-07-22
Updated on Modrinth
2026-08-31
Facts verified
2026-10-15

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