NoMonsInMyWorld

NoMonsInMyWorld is a lightweight, server-side Minecraft Fabric mod for Cobblemon that gives you per-world control over Pokémon spawning. Block specific species, filter by type/shiny status, or completely disable spawns in hub worlds, minigame maps, or curated dimensions.

Features

Per-World Spawning Control

Species Blacklists: Block specific Pokémon by ID in any world (e.g., cobblemon:rattata)
Advanced Conditions: Filter by type (type=ghost), shiny/legendary status (shiny=true), or any Pokémon property
Global Spawn Toggle: Disable ALL Cobblemon spawns per-world with one config option
Owned Pokémon Filter: Allow player-owned Pokémon to be summoned even in worlds where wild spawns are blocked

Per-World Riding Control (New!)

Dimension-Specific Bans: Completely disable the ability to ride Pokémon in specific worlds (perfect for spawns or hubs)
Mount Whitelisting/Blacklisting: Prevent players from riding specific species (e.g., ban cobblemon:charizard in the Overworld)
Conditional Riding: Restrict riding based on properties (e.g., prevent riding legendary=true Pokémon in survival worlds)

Simple JSON Configuration

Automatic config versioning and backup (no manual migration needed)
Live reload support
Clear syntax: use species IDs, property filters, or boolean flags

{
  "version": "1.0.0",
  "worlds": {
    "minecraft:overworld": {
      "spawning": {
        "disallowedSpecies": ["cobblemon:rattata", "cobblemon:pidgey"],
        "exclusionConditions": ["type=ghost", "shiny=true"],
        "disableAll": false,
        "excludeOwnedPokemon": true
      },
      "riding": {
        "disallowedSpecies": ["cobblemon:charizard"],
        "exclusionConditions": ["legendary=true"],
        "disableAll": false,
        "excludeOwnedPokemon": false
      }
    },
    "minecraft:the_nether": {
      "spawning": {
        "disallowedSpecies": [],
        "exclusionConditions": [],
        "disableAll": true,
        "excludeOwnedPokemon": true
      },
      "riding": {
        "disallowedSpecies": [],
        "exclusionConditions": [],
        "disableAll": true,
        "excludeOwnedPokemon": false
      }
    }
  }
}

Performance & Safety

100% Server-Side: No client mods required
Zero Tick Overhead: Event-based, runs only when Cobblemon tries to spawn