CurseForge · Minecraft mod

Instance Pack Manager

Automatically loads and enables every data pack and resource pack in the instance's datapacks/ and resourcepacks/ folders, in every world.

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which Instance Pack Manager release matches 1.21.1 NeoForge?

Updated today

Best match for your filters instance_pack_manager-2.1.2.jar

Game version 1.21.1

Loader NeoForge

Instance Pack Manager instance_pack_manager-2.1.2.jar targets 1.21.1 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.

Where it goes

Is Instance Pack Manager required on the client, server, or both?

The project page does not say whether this file belongs on the client, dedicated server, or both.

Client Source doesn’t say

Dedicated server Source doesn’t say

Loader for this release NeoForge

Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume

The source does not explicitly classify this release as client-only or server-only.

Understand client and server requirements Read the Minecraft installation guide

What else does Instance Pack Manager instance_pack_manager-2.1.2.jar need?

instance_pack_manager-2.1.2.jar on 1.21.1 NeoForge. Every mod below is checked against that same setup.

No extra mods listed for this file

This file does not list any required mods. Do not add a library just because a different file uses it.

This file does not list any required or optional mods.

Before you install it

Add Instance Pack Manager without breaking your instance.

Built for Instance Pack Manager instance_pack_manager-2.1.2.jar on 1.21.1 NeoForge. Pick another file and the loader, install side or required mods may change.

01
Stick to this file

Use instance_pack_manager-2.1.2.jar. It targets 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.
02
Bring the mods it needs

This file does not list any required mods. Do not add a library just because a different file uses it.
03
Put it on the correct side

The project page does not say whether this file belongs on the client, dedicated server, or both.
04
Pick the file you checked

Use the “Get this file” button beside instance_pack_manager-2.1.2.jar. It opens that exact file at the source.

About this project

What does Instance Pack Manager add?

Description

Instance Pack Manager loads the packs that are already in your instance and turns them on. You don't have to copy data packs into each world, and you don't have to enable resource packs by hand.

It was made for the Tales of Fantasia modpack but works in any NeoForge 1.21.1 instance.

What it does

Data packs in datapacks/ (at the instance root) are enabled in every world: new ones and existing saves.
Resource packs in resourcepacks/ are enabled from the main menu onward.
Both .zip files and unzipped pack folders are supported.

Why it works well with the CurseForge app

The CurseForge app installs Data Packs projects into datapacks/ and Resource Packs projects into resourcepacks/. This mod reads exactly those folders.

A modpack can therefore list its packs in its manifest, like any other project, instead of shipping the files itself. Every pack still comes from its author's own page.

Packs are sorted by content, not by folder

A pack is loaded as a resource pack if it contains assets/, and as a data pack if it contains data/. A pack with both is loaded as both, whichever folder it sits in.

This matters because the app places a mixed pack wherever its category says. Without this rule, half of the pack would never load.

Choose what each pack does (2.0.0)

Open Mods → Instance Pack Manager → Config. The screen has two tabs, Resource Packs and Data Packs. Each pack has an Enabled / Disabled button and a lock:

	Unlocked	Locked
Enabled	On by default: turned on once, players can remove it	Forced: always on, cannot be unticked
Disabled	Off by default: listed, players can add it	Blocked: never loaded, hidden from the pack screen

Settings are saved in config/tofneo_packs.json. Ship that file with your modpack.
A pack that is not in the file is forced, exactly like 1.0.0.
Resource pack changes apply as soon as you click Done. Data pack changes apply the next time a world loads.
"On by default" and "Off by default" are applied once per installation, then the player's choice is kept. The record is in local/tofneo_packs/seen.txt: do not ship it. If you change a pack's mode in an update, the new default is applied once.

Things to know

Load order is kept: packs already listed in options.txt stay in that order, and new packs are added on top.
Packs show the ToF Neo tag in the pack list.
The log shows what was loaded, for example: [Instance Pack Manager] data packs: 2 forced, 0 on by default, 0 off by default, 0 blocked, 0 without a data/ folder
No mixins: it only uses NeoForge's pack finder event and Minecraft's own folder scanner.
The mod ships no packs of its own.

Project description from CurseForge.

Pick your setup