Item Holders
Jose_ManuelS18

Adds 'Item Holders', blocks that hold your items in display, also provides a API.

Quest Framework
TeTpaAka

Simple framework to define quests.

Star
Wiz

A* Pathfinding algorithm implementation

Cid Music Player
ekl

Plays music

Advanced Fight Library
SFENCE

Library for implementing advanced combat systems with hitbox-based damage and body part health tracking

Doclib
joe7575

A library to generate ingame manuals based on markdown files.

Weapons API
Stix

Adds an API to easily register custom weapons

Archaeology
SkyBuilder1717

Adds an looting and API in archaeologing

Matrix Chat
joenas

This mod creates a bridge between a Matrix channel and the in-game chat!

typeof
TPH

Provides functionality similar to Luau's "typeof" function

flinv
Luke

API to add new inventory tabs which work across different inventory mods

Journal
theFox

Do you want to add story to your game? Make your protagonist write notes into his Journal.

Tasks Framework
AntumDeluge

Framework for adding tasks & quests.

Advance ore API
Sere Motsatt

Create complex minerals the easy way

More Triggers
SkyBuilder1717

Adds more triggers for Awards

NameGen
cronvel

Name generator API.

Node Updates
Sumi

Tells nodes when they are updated by neighbors being dug or placed, plus extra features. Last breaking change: 2025-09-10

FS51
Luke

Compatibility layer for formspecs

Priority Queue
Wiz

Associate items with priorities to order them.

Anti Exploit
LMD

Protects against exploits

Smart Chat
Clyde

A new, lightweight, simple and modular Chatsystem

Nametags2
Logikí

Allow objects had nametags with observers, colors and range

Antigrief
sorcerykid

An API for validating node and item placement via a simple callback mechanism.

Vision Lib
mt-mods

Common library for PolySaken's mods.

Discord Bridge
Lesha_Vel

Mod + external program providing Discord relaying and commands. This is a fork of discordmt by archfan7411

Fbt Core
Forburnt

A set of utils for other fbt_* mods

Entity Control Function Library
Noodlemire

Adds functions to override and unregister entities.

MFSM Multiple Finite State Machine
Sumi

Allows for multple states to be active, while maintaining typical state machine behavior. Good for gamestate and mobs.

deploader
LuantistDork

Simple mod API that automates dependency-specific behaviour using a folder-heavy approach.

color_lib
bookgirl

adds HEX colouring

Old Wizard Font
Pyrollo

OldWizard font for Font API

Dialogs
1F616EMO

Dialogs with options

Guider
1F616EMO

HUD markers for navigation

Natural Entities
LuantistDork

A lightweight API for spawning random entities

Signs Redux
sorcerykid

Signs Redux is a complete rewrite of default signs that adds many new features

Interactive Item API
Jose_ManuelS18

Provides an API to make it easier to implement items' inner workings.

Register, Attach & Detach
mzel1982

Register glowing 3D items and custom display nodes that you can easily attach to players, place on walls, or showcase on pedestals.

Echo
1F616EMO

In-game notification system

aSignals
Sumi

Signal event bus API including SIGNAL, LISTEN and CONDITIONAL functions

Chunk Version
Sumi

Stores the numerical version a chunk was generated, so that other mods may query this.