@world - NMEntities Docs

Targets every player in the mob’s world, no matter how far away they are.

- narrate "&4The boss has awakened." #onSpawn @world

When to use it

Use it for server-wide moments tied to a single mob: boss spawn and death announcements, world event kickoffs, global rewards for a shared kill.

toast_king:
  model: toast
  base: zombie
  display: "&6&lToast King"
  health: 300
  effects:
  - sound{sound=entity.wither.spawn;volume=2}   #onSpawn @world
  - narrate "&4The Toast King has awakened..."  #onSpawn @world
  - narrate "&aThe Toast King has fallen!"      #onDeath @world
  - title{title=&6Victory;subtitle=&7The kingdom is safe;stay=60} #onDeath @world

Details

World, not server. Only players in the same world as the mob are targeted. Players in the nether or another world don’t get the message.
It targets players only. Use it for messages, titles and sounds, not for damage sweeps.
Use it sparingly. A @world message on #onHurt fires on every hit and turns a boss fight into chat spam. Reserve it for spawn and death moments, and use @playersRadius for everything during the fight.

That’s the full targeter set. Back to What are Targeters for the overview table.

@mobsRadius All Mechanics

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