Mod EntityJS

EntityJS, Dynamic Custom Entities for Minecraft

EntityJS is a Java Edition mod and KubeJS addon that lets creators register and customize entities through JavaScript scripts. It supports custom or copied entity types, adjustable attributes, behavior changes, and direct modification of existing mobs, making it useful for modpacks and a Minecraft server with bespoke creatures.

Its main strength is control: builders can define AI goals, spawn conditions, rates, and locations, while optional Geckolib support enables detailed models and triggerable animations. With Fabric, Forge, and NeoForge compatibility across several Minecraft versions, EntityJS gives BoxToPlay creators a flexible foundation for scripted gameplay.