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Minecraft 1.21.11: Mounts of Mayhem is out

2 min read 3 October 2026

The "Mounts of Mayhem" update is live

The long-awaited Minecraft Java Edition 1.21.11 update, nicknamed "Mounts of Mayhem", is officially out. It brings a new weapon, aquatic mounts to tame, new enemies to face and brand-new combat strategies. For Minecraft servers, this version means not only refreshed gameplay but also substantial improvements in performance and graphics options.

The new combat system is built around the Spear, a tiered weapon whose damage depends on precision and on the speed of your mount.

New creatures, armour and effects

The update introduces a whole new ecosystem of mounts and creatures (mobs).

Mounts of Mayhem - Nautilus

The Nautilus (aquatic mount)

The Nautilus is a new neutral aquatic mob that spawns in every ocean biome.

  1. Taming and use: it can be tamed and bred with a Pufferfish. Once fitted with a Saddle, it can be ridden.
  2. Mount mechanics: it has a Dash ability triggered with the jump button.
  3. "Breath of the Nautilus" effect: the rider receives the Breath of the Nautilus effect, which pauses oxygen consumption.
  4. Nautilus armour: available in Copper, Gold, Iron, Diamond and Netherite.
Minecraft Nautilus

New hostile mobs

Survival gets more complex with these additions:

  1. Zombie Nautilus: a hostile underwater mob ridden by a Drowned.
  2. Parched: a desert skeleton that does not burn in the sun.
  3. Camel Husk: an undead camel variant.
  4. Zombie Horses: now spawn naturally in the dark.

The Spear: a new mounted combat weapon

The Spear is a long-range weapon that redefines combat on horseback.

Minecraft Spear

Spear mechanics

  1. Extended maximum reach, with a minimum reach.
  2. Two attacks:
    • Jab Attack.
    • Charge Attack.

The Lunge enchantment

A new enchantment exclusive to the Spear.

  1. Only works with the jab attack.
  2. Propels the player horizontally.
  3. Consumes durability and hunger.

Graphics and technical improvements

Update 1.21.11 brings crucial optimisations.

New graphics filters

  1. Texture filtering: None, RGSS, Anisotropic.
  2. Better clarity and FPS.

Major technical changes for hosts

  1. Reworked game rules.
  2. New environment attributes.
  3. /stopwatch command.
  4. Performance improvements.

Version 1.21.11 is a major update for Minecraft servers.