ModsFinder

RMS

by HydrouX

RMS, short for RMS Random Mob Spawner, is a Fabric mod that periodically spawns a random mob into the world while the game runs.

FabricClient and serverMIT License1.21.11

What it does

Every 30 seconds the mod spawns a random mob, and an on-screen countdown shows how long remains before the next one. The mob is picked at random from the game's mob types, with the Ender Dragon, Warden and Wither left out so that the fights stay balanced. Some of the spawned mobs receive random armor and weapons, which changes how they fight. The intent is to bring surprise and challenge to an existing world.

The mod is controlled entirely with in-game commands: rms enable turns it on, rms off turns it off, and a language command switches the on-screen messages between Arabic and English. Because it is a single lightweight Fabric mod, a world can keep it running without much overhead. Servers that run it need every player to install it too.

RMS is released under the MIT License and is not open source. Files are published for Fabric only, for Minecraft 1.21.11, and the latest build is 1.0.0, dated 2026-08-24, the same day the mod was first published and last updated.

Key features

  1. Timed random spawns

    A random mob appears every 30 seconds without any command or action from the player.

  2. Countdown display

    An on-screen countdown shows the time left until the next mob spawns.

  3. Excluded bosses

    The Ender Dragon, Warden and Wither are never picked, keeping the spawns within a manageable challenge.

  4. Random gear for mobs

    Certain spawned mobs are equipped with random armor and weapons when they appear.

  5. Command control

    Commands enable or disable the mod, and a setting switches the messages between Arabic and English.

Compatibility

Latest build for each game version and loader.

1.21.111.0.0
ReleaseBetaAlphaNot available

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

How it compares

Full comparison

Random Drops is a Fabric mod for 1.21.10 that runs on client and server and is open source under the MIT License, so it changes item drops instead of spawning mobs. Exploding Mobs is a Fabric mod for 1.21.11 that is server-side only and not open source, released under the MIT License. Missing Eggs is a Fabric mod for 1.21.11 that is client-side only and open source under the MIT License, so it does not affect the server.

ModLoadersGame versionsEnvironmentUpdated
RMSFabric1.21.11Client and server2026-08-24
Random DropsFabric1.21.10Client and server2025-11-18
Exploding MobsFabric1.21.11Server-side only2026-03-19
Missing EggsFabric1.21.11Client-side only2026-07-31

Questions

Does RMS need Fabric API?

No required dependency is listed for Fabric.

Does the server need RMS installed?

Yes. A server running it needs every connecting player to have it too.

Can the spawns be turned off during play?

Yes. The command rms off disables the mod, and rms enable turns it back on.

Which Minecraft version does RMS support?

Files are published for Minecraft 1.21.11 only, so other game versions are not covered.

In the catalog

RMS is one of 11,058 Mobs mods on ModsFinder, and one of 5,189 Mobs mods for Fabric. 19,862 mods support Minecraft 1.21.11.

Mobs mods11,058Fabric modsMods for 1.21.1119,862

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What the author says

RMS (Random Mob Spawner) is a lightweight and fun Fabric mod for Minecraft that periodically spawns a random mob to bring excitement and challenge to your world! Features: - Automatically spawns a random mob every 30 seconds with an on-screen countdown. - Excludes the Ender Dragon, Warden, and Wither for a balanced…
HydrouX, on the Modrinth page

Official listing

Owner
HydrouX
Published
2026-08-24
Updated on Modrinth
2026-08-24
Facts verified
2026-10-15

Tags

AdventureGame mechanicsMobs
Open on ModrinthCompare