Cobblemon Trials Edition Mod (1.21.1) – Customizable Trial Spawners

Available for:FabricNeoForge

Trial Spawners are one of Minecraft's most exciting combat features, but they become even better when you can fully control what spawns from them. Cobblemon Trials Edition Mod replaces newly generated Mob Spawners and Trial Spawners with configurable blocks, giving modpack creators the power to customize spawner defaults through datapacks while keeping the vanilla mechanics players already know. It also introduces a Trial Potion that applies the Trial Omen effect — offering an alternative way to activate Ominous Mode without hunting for the traditional trigger.

Key Features

  • Configurable Spawner Replacement — Automatically swaps out vanilla Mob Spawners and Trial Spawners with customizable versions, letting you define exactly what appears in newly generated structures.
  • Datapack-Driven Customization — All spawner behavior is controlled through datapacks, so modpack makers can tweak defaults without touching any code or config files.
  • Familiar Mechanics — Replaced spawners function identically to regular Trial Spawners, meaning players don't need to learn any new systems to interact with them.
  • Trial Potion Item — A new potion that applies the Trial Omen effect directly, providing an alternative path to activate Ominous Mode for players who want to trigger it on demand.
  • Player & Creator Friendly — Designed to work seamlessly for casual players while offering deep customization hooks for modpack developers building curated experiences.

Screenshots

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How to Install

  1. Download and install Fabric Loader or NeoForge for Minecraft 1.21.1 or 1.21.
  2. Install the required dependencies: Fabric API (for Fabric), Cobblemon Mod, and Kotlin for Forge (for NeoForge).
  3. Download the Cobblemon Trials Edition Mod file for your loader from the link below.
  4. Place the downloaded .jar file into your .minecraft/mods folder.
  5. Launch Minecraft and verify the mod appears in your mod list.

Requirements

Component Details
Mod Loader Fabric or NeoForge
Dependencies Fabric API, Cobblemon Mod, Kotlin for Forge Mod, NeoForge Installer
Minecraft Version 1.21.1, 1.21

Pros & Cons

Pros

  • Full datapack support makes customization accessible without coding knowledge
  • Preserves vanilla Trial Spawner behavior so players feel at home
  • Trial Potion adds a convenient way to trigger Ominous Mode on demand
  • Supports both Fabric and NeoForge loaders

Cons

  • Requires Cobblemon as a dependency, which is a large mod on its own
  • Only affects newly generated spawners — existing world structures remain unchanged
  • Limited to Minecraft 1.21.x versions at this time

Download

Minecraft VersionLoaderDownload Links
For Minecraft 1.21.1, 1.21
Fabric

For Minecraft 1.21.1, 1.21
NeoForge

Always download mods from official sources to stay safe.

FAQ

Does Cobblemon Trials Edition replace spawners in my existing world?

No, the mod only replaces Mob Spawners and Trial Spawners in newly generated structures. Spawners that already exist in explored chunks will remain unchanged.

Can I customize what Pokémon or mobs spawn from the trial spawners?

Yes. The mod is fully customizable through datapacks, allowing modpack creators and players to define spawner defaults and control exactly what appears.

What does the Trial Potion do?

The Trial Potion applies the Trial Omen effect to your character, which activates Ominous Mode. This gives you an alternative way to trigger ominous trials without needing the traditional activation method.

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