Cobblemon: Mega Showdown
by YajatKaul
With Mega Showdown installed, Cobblemon gains Mega Evolution, Z-Moves, Teralization, Dynamax and Gigantamax, and Fusions, all as separate gimmick items.
What it does
Mega Showdown works as a modding platform for Cobblemon. Its wiki for addon creators describes custom Megas, Gigantamax forms, fusions and general form changes, along with custom Showdown items such as held form changes, custom status effects, conditions and weathers, and custom battle scripts. Most of these are built with datapacks rather than code.
The mod covers all 90+ Megas, every gimmick, every fusion Pokémon, and form changes that can be shown on riding Pokémon. Cosmetic items and Accessories support are included. Installation needs Accessories, Architectury API, Cobblemon, Fabric API and oωo (owo-lib). Client and server: the server and every player need the mod. It is published for Fabric and NeoForge under a custom license, and it is not open source. Files cover 1.21.1 only.
Key features
Gimmick slots
Every Mega Showdown gimmick item can be worn in its own slot, so it does not compete with other accessory mods.
Custom Megas and forms
Megas, Gigantamax forms, fusions and general form changes can be added through datapacks.
Custom Showdown content
Items, status effects, conditions, weathers and battle scripts can be defined for use in Showdown battles.
Cosmetic and riding support
Cosmetic items and riding Pokémon form changes are supported alongside the gimmicks.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 5
Required by 30 mods
Use cases
Addon creation
Addon authors use the wiki and datapacks to add new Megas, items and battle rules to the Cobblemon ecosystem.
Who it’s for: Players who want more Pokémon battle gimmicks, and server owners running Cobblemon who want to add custom content through datapacks.
How it compares
RZGYMS is a Fabric client and server mod under the MIT License, published for 1.21.1, and it is not open source. Cobblemon Journey Mounts runs on Fabric and NeoForge for 1.21.1, under the MIT License; only the server needs it, and players join without installing it. Cobblemon Trainers is open source under CC0 1.0 Universal for Fabric and NeoForge on 1.21.1, with the same client and server environment as Mega Showdown.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Cobblemon: Mega Showdown | Fabric and NeoForge | 1.21.1 | Client and server | 2026-10-14 |
| RZGYMS | Fabric | 1.21.1 | Client and server | 2026-07-11 |
| Cobblemon Journey Mounts | Fabric and NeoForge | 1.21.1 | Server required, client optional | 2026-01-24 |
| Cobblemon Trainers | Fabric and NeoForge | 1.21.1 | Client and server | 2026-10-06 |
Questions
Does Mega Showdown need Cobblemon installed?
Does the server need Mega Showdown?
Which loader should be used?
Can custom Megas be added without writing Java code?
In the catalog
Cobblemon: Mega Showdown is one of 17,631 Equipment mods on ModsFinder, and one of 8,894 Equipment mods for Fabric. 32,366 mods support Minecraft 1.21.1.
More from YajatKaul
Similar mods
What the author says
Create your own Megas, Items & much more! Custom Megas, Gmax, Fusions, and general Form Changes Custom Showdown items, including held form changes Custom Status effects, Conditions or weathers Custom Showdown/Battle scripts And much more!
Official listing
- Modrinth page
- modrinth.com/mod/cobblemon-mega-showdown
- Owner
- YajatKaul
- Published
- 2025-02-02
- Updated on Modrinth
- 2026-10-14
- Facts verified
- 2026-10-15