NPCs engine

NPCs engine

Interactive NPC system with dialogues for Minecraft 1.21.9+

by
4.2K Downloads
datapackfabricforgeneoforgequiltlibrarysocialutility
Rent Server with this Mod

Screenshots

NPC

About this Mod

NPC Engine

Interactive NPC system with dialogues for Minecraft 1.21.9+

NPC Engine is a data pack for creating NPCs with a dialogue system, response options, and a cinematic camera.


🎯 Features

NPCs

  • Mannequins — NPCs based on minecraft:mannequin with custom skins
  • Other Entities — Villagers, zombies, skeletons, etc.
  • Interactivity — Clicking on an NPC starts a dialogue
  • Visual Editor — Control via the action bar

Dialogues

  • Typewriter Effect — Smooth character-by-character typing
  • Choice System — Branching dialogues with multiple answer options
  • Navigation — Shift to skip to the next line
  • Text Display — Text is displayed above the NPC

Camera

  • Cinematic Mode — Automatically zooms in on the NPC
  • Positioning — The camera is positioned to the side of the NPC
  • Smooth Transitions — Blindness effect at the start/end Dialogue
  • Restore — automatically returns the player to their starting position

🚀 Installation

  1. Place the npcs-engine folder in your world's datapacks
  2. Run /reload

📋 Usage

Open the Editor

/function _npsc:open

Editor Controls

  • Mouse Wheel — Navigate the menu
  • RMB (carrot on a fishing rod) — Select an item

Editor Menu

Item Description
📝 Create NPC Create a new NPC
📋 List View all NPCs
💬 Dialogues Dialogue Editor
🎬 Dialogue Test Run a Dialogue Test
❌ Exit Close Editor

Interacting with NPCs

  • Click on the NPC to start a dialogue
  • Shift — next line
  • The dialogue ends automatically after the last line

🔧 API for Developers

Creating an NPC

# Create a mannequin NPC
function npcs:npc/create_player

# Create an NPC entity
function npcs:npc/create_entity

Dialogue Management

# Add a dialogue line
function npcs:dialog/editor/add_line {npc_id:1,text:"Hello, traveler!"}

# Add a choice
function npcs:dialog/editor/add_choice {npc_id:1,text:"Where shall we go?",choices:["North","South"]}

# Start a dialogue programmatically
function npcs:dialog/start_play

Data Storage

  • Storage npcs:data — NPC and dialogue data
  • Storage npcs:current_dialog — currently active dialogue

📋 Requirements

  • Minecraft: 1.21.9+
  • Permissions: Operator for editor commands

🎮 Example: Quest NPC

# 1. Create an NPC
function npcs:npc/create_player

# 2. Add dialogues (npc_id = 1)
function npcs:dialog/editor/add_line {npc_id:1,text:"Greetings, hero!"}
function npcs:dialog/editor/add_line {npc_id:1,text:"I have something for you" task."}
function npcs:dialog/editor/add_choice {npc_id:1,text:"Will you accept it?",choices:["Of course!","Not now"]}

Create living worlds with the NPC Engine! 💬✨

Available Versions

v1alpha
MC 1.21.9, 1.21.10, 1.21.11, 26.1, 26.1.1, 26.1.2fabric, forge, neoforge, quilt
April 22, 2026
v1alpha
MC 1.21.9, 1.21.10, 1.21.11fabric, forge, neoforge, quilt
December 7, 2025
v1alpha
MC 1.21.9, 1.21.10, 1.21.11, 26.1, 26.1.1, 26.1.2datapack
December 4, 2025

How to Install NPCs engine on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set datapack Loader

In the panel under "Egg", select the datapack loader and matching Minecraft version (26.1.2).

3

Install Mod

Open the mod browser in the dashboard and search for "NPCs engine". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

datapackfabricforgeneoforgequilt

Minecraft Versions

26.1.2, 26.1.1, 26.1 (+3 more)

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

NPCs engine server crashes on startup – what to do?

Most common cause: wrong datapack version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (26.1.2). You can switch loaders with one click in the panel.

Is NPCs engine compatible with datapack and fabric and forge and neoforge and quilt?

NPCs engine officially supports datapack, fabric, forge, neoforge, quilt for Minecraft 26.1.2, 26.1.1, 26.1. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with NPCs engine – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if NPCs engine consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install NPCs engine with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
LicenseRef-All-Rights-Reserved
Server-side
Required

Supported Versions

26.1.226.1.126.11.21.111.21.101.21.9