Cobblemon Spawn Custom
by yurimenzl
Cobblemon Spawn Custom changes which Pokémon appear in the world of the Cobblemon mod, and how often their IVs, shininess and hidden abilities turn up.
What it does
The mod is a server-side configuration layer for Cobblemon, so players join without installing anything. Spawn settings live in data files inside the Cobblemon spawn pool folders, one entry per species, and each entry can set the IV value and quantity, the shiny chance, the hidden ability chance and the species list. Regular Pokémon, legendaries, Paradox Pokémon and Ultra Beasts each have their own folder, and Cobblemon's default values stay in place for anything left unchanged.
To edit an entry, a server owner first looks up the exact species name in the Cobblemon source or the AllTheMons data. Compound names are written without spaces, so a Paradox Pokémon such as Iron Valiant is entered as IronValiant, otherwise the spawn is not recognized. The mod is released under the GNU General Public License v3.0 only, and its source code is public. It requires Cobblemon and is published for NeoForge only, with 0.0.1 for 1.21.1 as the single release.
Key features
Per-species IV settings
Each spawn entry sets how many IVs a Pokémon carries and at what value, so a server can make specific species stronger or weaker.
Shiny and hidden ability chances
The shiny chance and the hidden ability chance can be set separately for each species, giving a chosen Pokémon a higher or lower rate of either.
Spawn pool files
Separate spawn pool files cover regular Pokémon, legendary spawns, Paradox Pokémon and Ultra Beasts, so each group can be tuned on its own.
Species lists
Each category file has a list of species that the entry applies to, so a group such as legendaries can be adjusted in one place.
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 1
How it compares
Cobblemon Shiny Rarities also adjusts shiny chances, but it is client and server, which means every player needs it; it is published for Fabric and NeoForge for 1.21.1 under the MIT License and is open source. Cobblemon Alphas and Cobblemon Spawn Chaining are server required and client optional, both are open source under the MIT License and both cover 1.21.1 on Fabric and NeoForge. Cobblemon Spawn Custom works on NeoForge only and is open source under the GNU General Public License v3.0 only.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Cobblemon Spawn Custom | NeoForge | 1.21.1 | Server-side only | 2025-09-07 |
| Cobblemon Shiny Rarities | Fabric and NeoForge | 1.21.1 | Client and server | 2026-09-28 |
| Cobblemon Alphas | Fabric and NeoForge | 1.21.1 | Server required, client optional | 2025-11-13 |
| Cobblemon Spawn Chaining | Fabric and NeoForge | 1.21.1 | Server required, client optional | 2026-09-14 |
Questions
Does Cobblemon Spawn Custom need Cobblemon?
Do players need to install Cobblemon Spawn Custom?
Why does a Paradox Pokémon not spawn with its configured settings?
In the catalog
Cobblemon Spawn Custom is one of 11,058 Mobs mods on ModsFinder, and one of 4,974 Mobs mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
Similar mods
What the author says
With this mod you can change how many IVs comes with a specific value or allow you to change the probability to a specific pokemon spawns with a hidden ability or being shiny. Totally customized with a configurable file. To find the species name, you will need to access the Cobblemon/AllTheMons github and look for…
Official listing
- Modrinth page
- modrinth.com/mod/cobblemon-spawn-custom
- Owner
- yurimenzl
- Published
- 2025-09-07
- Updated on Modrinth
- 2025-09-07
- Facts verified
- 2026-10-15