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RCT Addon - Toppoh League Radical Cobblemon Trainers

by f3hl1ks

RCT Addon - Toppoh League Radical Cobblemon Trainers adds a fictive Gym Series of trainers to the Toppoh Region for Cobblemon players to challenge.

FabricForgeNeoForgeQuiltServer required, client optionalMIT License1.21.1

What it does

The addon adds eight Gym Leaders, four Members, an Elite Four and a Champion, with several trainer fights between them. Each Gym Leader focuses on one type, and one special Dancing-themed Member and some elite trainers use a more varied mix. The author ran several playtests to keep Gym Leaders challenging without making their fights overcomeable.

Starting the Gym Series works the same way as in the other RCT Series. Players obtain a Trainer Card by exchanging with a Gym Association villager, and the addon is intended for group play with friends. Mega Showdown must be set up properly for certain features, while the Data pack build lets modpacks such as Toppermon run the content without it. The mod requires the server, and clients can optionally install it. It is released under the MIT License and is not open source. Builds are published for Fabric, Forge, NeoForge and Quilt for 1.21.1.

Key features

  1. Eight Gym Leaders

    Each Gym Leader has a team built around a single type, with the Gym Series spread across the Toppoh Region.

  2. Elite Four and Champion

    Four Members, an Elite Four and a Champion complete the Gym Series, with several more trainers between the fights.

  3. Dancing-themed Member

    One special Member follows a Dancing theme, adding a different style of battle to the Gym Series.

  4. Trainer Card exchange

    Players obtain a Trainer Card by exchanging with a Gym Association villager in the Toppoh Series.

Compatibility

Latest build for each game version and loader.

1.21.11.2.1+mod1.2.1+mod1.2.1+mod1.2.1+mod
ReleaseBetaAlphaNot available

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

How it compares

Full comparison

RCT Custom Series: Failrun is an All rights reserved mod for 1.21.1 that the server must run, while clients may skip it, and it is not open source. CobGyms - Unofficial Cobblemon Gyms is open source under the Mozilla Public License 2.0, published for 1.20.1 – 1.21.1, and needs both the client and the server. Cobblemon Trainer Doubles uses a custom license and covers 1.21.1 – 1.21.11, with the server required and the client optional.

ModLoadersGame versionsEnvironmentUpdated
RCT Addon - Toppoh League Radical Cobblemon TrainersFabric, Forge, NeoForge and Quilt1.21.1Server required, client optional2025-12-24
RCT Custom Series: FailrunFabric, Forge, NeoForge and Quilt1.21.1Server required, client optional2026-08-07
CobGyms - Unofficial Cobblemon GymsFabric, Forge and NeoForge1.20.1 – 1.21.1Client and server2025-03-28
Cobblemon Trainer DoublesFabric and NeoForge1.21.1 – 1.21.11Server required, client optional2026-10-06

Questions

Does RCT Addon - Toppoh League need Mega Showdown?

Certain features need Mega Showdown set up properly. The Data pack build for modpacks such as Toppermon can be used without it.

Does the addon need to be installed on the client?

No. Only the server must run it, while players may add it for their own side.

Which loaders are supported?

Builds are published for Fabric, Forge, NeoForge and Quilt, all for 1.21.1.

In the catalog

RCT Addon - Toppoh League Radical Cobblemon Trainers is one of 2,135 Minigame mods on ModsFinder, and one of 1,454 Minigame mods for Fabric. 32,366 mods support Minecraft 1.21.1.

Similar mods

What the author says

This addon adds a new fictive Gym Series for the Radical Cobblemon Trainers mod. Some features require Mega Showdown to be installed as well. The Datapack was made for the Modpack "Toppermon" but can also be used without it. Several playtests were held to make sure that all gym leaders feel challenging without making…
f3hl1ks, on the Modrinth page

Official listing

Owner
f3hl1ks
Published
2025-12-06
Updated on Modrinth
2025-12-24
Facts verified
2026-10-15

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