Custom Advancements — Minecraft Advancement Customization

Custom Advancements is a Minecraft Forge mod for 1.18.2 that gives players and modpack creators full control over the advancement system.

Custom Advancements is a Minecraft Forge mod that hands complete creative control of the advancement system back to players and modpack creators. Whether you want to replace the default advancement trees with something entirely your own, silently remove recipe unlocks, or lock players behind a strict progression gate until they earn the right to move forward, this mod makes it possible — without writing a datapack for every individual world.

Key Features

Custom Advancements

Add your own advancement JSON files and inject them into the game alongside — or entirely in place of — vanilla and mod advancements. The mod reads every .json file inside the customadvancements/ folder and applies them to every world on that installation.

Override Existing Advancements

Export any vanilla or mod advancement to an editable JSON file with /ca generate advancement, change whatever you like, and the mod loads your version in place of the original.

Blacklist & Whitelist

Remove specific advancements, all recipe advancements, or every advancement in the game. Flip a single config flag to turn the blacklist into a whitelist and keep only the advancements you care about.

Progression System

Enable strict advancement progression so that every advancement is only achievable once its parent has been completed. Four modes — ALL, MODS, MINECRAFT, and CUSTOM_ADVANCEMENTS — let you scope the enforcement precisely, with per-mod exemptions and optional progress reset on death.

Custom Backgrounds

Point the background field of any root advancement at your own image file. Three mod-specific display fields — largeBackground, shouldBgClip, and bgRatio — control how that image is scaled, centered, and clipped inside the tab.

Tab Sorting

Control the order of tabs in the advancements screen using three sorting modes: UNSORTED (default), ALPHABETICALLY, or DEFINED_LIST — where you supply a specific ordered list of root advancement IDs.

In-Game Commands

Use built-in commands such as /ca generate advancement all to export every loaded advancement as an editable JSON file, /ca generate resource_locations to dump all advancement IDs to a text file, and /ca reload to apply your edits without a restart.

Internationalization

Ship translation files alongside your advancements. The mod loads .json language files from customadvancements/data/lang/ and injects them into the game’s translation table, so your custom advancement titles and descriptions are fully localizable.

Who It’s For

Audience	Primary use case
Players	Add personal achievement goals to a single-player world without editing game files or creating a datapack
Server admins	Filter out irrelevant vanilla advancements, enforce a custom progression path, and reward players through a structured system
Modpack creators	Ship a fully custom advancement experience — custom tabs, icons, backgrounds, and progression rules — bundled directly in the pack’s overrides

How the Folder Structure Works

On first launch, Custom Advancements creates a customadvancements/ folder directly inside your game directory (the same directory that holds saves/, mods/, and config/). On a dedicated server this is the server root — the folder that contains server.properties. The contents of this folder are applied to every world you load or host on that installation.

Inside customadvancements/, the first level of subfolders defines the namespace an advancement is registered under. A file at customadvancements/customadvancements/my_tree/root.json is registered with the resource location customadvancements:my_tree/root, while a file at customadvancements/minecraft/story/mine_stone.json replaces the vanilla advancement minecraft:story/mine_stone.

<game_directory>/
└── customadvancements/
    ├── customadvancements/   ← your own advancement trees
    ├── minecraft/            ← overrides for vanilla advancements
    └── data/
        ├── textures/         ← custom background images
        └── lang/             ← custom translation files

The data/ folder is skipped when the mod scans for advancement JSON files, so your textures and language files are never parsed as advancements.

The mod copies its bundled example files into customadvancements/customadvancements/, data/textures/, and data/lang/ the first time each of those folders is created. Those examples are working, ready-to-edit references — see Examples for a full walkthrough of each one.

Supported Platform & Versions

Custom Advancements 4.7.5 targets Minecraft 1.18.2 on Minecraft Forge.

Requirement	Version
Minecraft	1.18.2 (accepted range [1.18.2, 1.19))
Minecraft Forge	40 or newer (accepted range [40, ∞))
Additional dependencies	None

Fabric, Quilt, and NeoForge are not supported by this release, and neither are Minecraft versions outside the [1.18.2, 1.19) range. Check the mod’s CurseForge or Modrinth page for builds targeting other versions.

Ready to get the mod installed? Head to the Installation page for step-by-step instructions.