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MINECRAFT 1.21.130 BEDROCK CHANGELOG

Mounts of Mayhem charges into Minecraft today with new features, mobs, and weapons!

Written By: Mannooma  |   Published: 12/10/25

Mounts of Mayhem charges into Minecraft today!

Today Mounts of Mayhem charges into Minecraft, bringing a new weapon to wield, mounts to tame, foes to face, and strategies to master! Challengers await beneath scorching suns, night skies, and deep in the ocean's depths - and each clash will demand a fresh strategy. Fight back with the spear, a new tiered weapon which deals damage based on your precision and the speed of your trusted steed. So, riders of the Overworld - mount up and lead the charge in the Mounts of Mayhem drop!

New Features

Mounts of Mayhem

Mount improvements

Nautilus

Nautilus Armor

Breath of the Nautilus

Zombie Nautilus

Coral Zombie Nautilus

Spear

Charge Attack

Jab Attack

Lunge Enchantment

Zombie Horse

Parched

Camel Husk

Features and Bug Fixes

Audio

Blocks

Character Creator

Gameplay

General

Graphical

Input

Items

Mobs

Baby Zombie Jockey Rules

Only Baby Zombie jockeys and Baby Husk jockeys can ride:
Adult Chickens Untamed Ocelots Untamed Cats Untamed Wolves Adult Zombies Adult Husks Adult Zombified Villagers Adult Zombified Piglins Cows Adult unsaddled Pigs Sheep Adult untamed Horses Adult untamed Donkeys Adult untamed Mules Adult Skeleton Horses Adult Zombie Horses Mooshrooms Spiders that were not spawned as jockey mounts Cave Spiders that were not spawned as jockey mounts

Technical Updates

AI Goals

minecraft:behavior.use_kinetic_weapon Example
"minecraft:behavior.use_kinetic_weapon": { "approach_distance": 5.0, "reposition_distance": 3.0, "reposition_speed_multiplier": 1.5, "cooldown_distance": 8.0, "cooldown_speed_multiplier": 1.2, "weapon_reach_multiplier": 1.0, "weapon_min_speed_multiplier": 1.0, "min_path_time": 0.5, "max_path_time": 2.0, "path_fail_time_increase": 0.2, "inner_boundary_time_increase": 0.1, "outer_boundary_time_increase": 0.3, "path_inner_boundary": 10.0, "path_outer_boundary": 20.0, "speed_multiplier": 1.0, "require_complete_path": true, "track_target": true, "cooldown_time": 3.0, "melee_fov": 90.0, "x_max_rotation": 30.0, "y_max_head_rotation": 30.0, "random_stop_interval": 100, "attack_once": false }

API

Cubemap Configuration Example
{ "format_version": "1.21.130", "minecraft:cubemap_settings": { "description": { "identifier": "mypack:mycubemap" }, "lighting": { "ambient_light_illuminance": { "0.00000": 4.0, "1.000000": 4.0 }, "sky_light_contribution": 1.0, "directional_light_contribution": 1.0, "affected_by_atmospheric_scattering": true, "affected_by_volumetric_scattering": true } } }
Biome Configuration with Cubemap
{ "format_version": "1.21.130", "minecraft:client_biome": { "description": { "identifier": "minecraft:river" }, "components": { "minecraft:cubemap_identifier": { "cubemap_identifier": "mypack:mycubemap" } } } }

Blocks

Custom Fence Block Example
{ "format_version": "1.21.130", "minecraft:block": { "description": { "identifier": "test:my_fence", "traits": { "minecraft:connection": { "enabled_states": ["minecraft:cardinal_connections"] } } }, "components": { "tag:minecraft:has_fence_connections": {}, "minecraft:connection_rule": { "accepts_connections_from": "only_fences" } } } }

Item Components

minecraft:kinetic_weapon Component Example
"minecraft:kinetic_weapon": { "delay": 10, "reach": 3.5, "hitbox_size": 0.3, "damage_multiplier": 2.0, "damage_modifier": 1.0, "damage_conditions": { "max_duration": 20, "min_speed": 0.5, "min_relative_speed": 0.3 }, "knockback_conditions": { "max_duration": 15, "min_speed": 0.3 }, "dismount_conditions": { "max_duration": 10, "min_speed": 0.7 } }

Important Developer Notes

⚠️ IMPORTANT: From Mannooma
I'm telling you this isn't working with the current team setup. The integration between the new kinetic weapon system and the existing AI goals needs more testing before deployment. The cubemap configuration system also has some compatibility issues with older resource packs. Please make sure to: 1. Test all new components in isolation first 2. Check for memory leaks with the new cubemap system 3. Verify that the kinetic weapon animations sync properly in multiplayer 4. Test the new mount mechanics with existing mods

**REMEMBER:** Always back up your worlds before updating! Experimental features may cause instability.

That's all for the massive 1.21.130 update! Get ready to tame some Nautilus, craft those spears, and enjoy all the new Mounts of Mayhem content!