Cobblemon Ultra Wormholes Mod adds raid-style boss battles for Cobblemon. It spawns timed wormhole events where players team up to fight a giant Ultra Beast. Everyone fights the same boss and attacks a shared health pool. Any player who joins the battle gets their own reward. You can even use a Beast Ball to catch the boss after the group wins.

Cobblemon Ultra Wormholes Mod

Features:

  • Spawns random wormhole events based on a timer.
  • Players fight monsters with a shared health pool across the whole server.
  • Lets any number of players join the active boss fight at the same time.
  • Gives rewards based on who actually helped fight the boss.
  • Asks you if you want to use a Beast Ball to catch the monster after defeating it.
  • Lets server owners change the list of monsters that spawn from the portals.
  • Changes the moves, held items, stats, and shiny chances for each boss.
  • Keeps the active portal and boss health saved even if the server restarts.
  • Adds custom skybox and visual effects if you install it on your own computer.

How to Use:

  1. Wait for a wormhole to open near an online player or trigger it with a command.
  2. Check the chat for an announcement with coordinates to find the boss.
  3. Attack the monster to join the shared battle before the timer runs out.
  4. Defeat the boss with other players to receive your items.
  5. Hold a Beast Ball in your inventory to get a prompt to catch the defeated monster.

Commands:

  • /wormhole start opens an event right away.
  • /wormhole stop closes the active event.
  • /wormhole status checks if an event is happening right now.
  • /wormhole reload updates the settings without restarting the game.

Configuration:

  • The mod creates a file called config/ultra_wormholes.json to change settings.
  • Adjust the minimum and maximum time between events.
  • Change the boss level, size, and health multiplier.
  • Set up custom rewards and shiny chances.
  • Change how long the portal stays open after the fight ends.

Screenshots:

Player entering a chat command to start an event in a snowy biome
Player entering a chat command to start an event in a snowy biome
Glowing purple wormhole portal floating in the night sky above snowy mountains
Glowing purple wormhole portal floating in the night sky above snowy mountains
Glowing purple wormhole portal floating above a snowy Minecraft landscape
Glowing purple wormhole portal floating above a snowy Minecraft landscape
Green blocky boss creature with a red outline in a snowy biome
Green blocky boss creature with a red outline in a snowy biome
Player looking at a glowing purple wormhole in the dark night sky
Player looking at a glowing purple wormhole in the dark night sky
Glowing purple portal floating above an ice spikes biome during the night
Glowing purple portal floating above an ice spikes biome during the night
Glowing purple wormhole portal appearing in the night sky above an icy biome
Glowing purple wormhole portal appearing in the night sky above an icy biome
Large four legged boss monster standing on ice next to tall ice spikes
Large four legged boss monster standing on ice next to tall ice spikes
Highlighted green creature waiting for battle in an ice biome
Highlighted green creature waiting for battle in an ice biome
Glowing purple and white wormhole portal in the dark sky
Glowing purple and white wormhole portal in the dark sky

Cobblemon Ultra Wormholes Mod Download Links

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For Minecraft 1.21.1, 1.21

NeoForge 258 KB May 25, 2026
Fabric 257 KB May 25, 2026

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