Challenge Library

Challenge Library is a modular challenge mod for Fabric that adds fast, high-pressure gameplay for singleplayer and multiplayer worlds.

Create custom challenge runs in seconds, combine compatible challenges, switch to random challenge rotations, generate challenge maps, and manage everything in-game.

Note:

This is not a library or API mod.

It is a standalone Minecraft mod that directly adds new in-game challenges and does not require any additional dependencies beyond the standard mod loader.

Why Challenge Library?

Fast setup with no complicated configuration
Multiple challenge modes in one clean system
In-game selection, descriptions, and session controls
Random challenge rotation for endless variety
Challenge maps for structured custom worlds
Multiplayer-ready challenge flow
Great for challenge videos, streams, and SMP events

Features

In-game challenge menu with descriptions
Select multiple challenges with compatibility checks
Random Challenge Mode with selectable challenge pools
Configurable random switch intervals
Challenge Maps menu for map-based challenge worlds
One Chunk map generation directly from the mod
Full settings menu with general, timer, UI, and data tabs
Start, stop, and resume challenge sessions
Synced session flow for multiplayer
Clear feedback via chat, actionbar, and HUD
Persistent config and session state
Localization: English and German

Included Challenges

One Inventory Slot
Only the first hotbar slot and offhand are usable.
New Chunk, Random Mob
Entering a new chunk can trigger a random mob encounter.
Find The Item, Or Die
A timed target item must be found before the timer ends.
Don't Stop Moving
Standing still too long causes lethal damage.
Block Drop Randomizer
Blocks drop randomized items, consistent per world and dimension.
Mob Drop Randomizer
Mob drops are randomized by mob type.
Changing Gravity
Gravity changes over time.
No Jumping
Jumping is fully disabled.
Ultra Fog
Visibility is heavily reduced.
Ultra Hardcore
No natural regeneration; death is heavily punishing.
Block Cooldown
Blocks can only be placed after a cooldown.
Higher Level, Bigger Border
The world border grows as you level up.
Nether Start
Start your challenge run in the Nether.
Name & Texture Shuffle
Minecraft names and textures are shuffled for a chaotic twist.

Commands

/challenge select <id>
/challenge start
/challenge stop
/challenge status
/challenge describe <id>

Multiplayer

Challenge Library is designed for co-op and SMP challenge runs:

Shared pressure and consequences
Synchronized challenge state
Great for events and creator challenges
Works well with random challenge rotations and map-based runs

Development Status

Challenge Library is in active development.

More challenges, balancing updates, random mode improvements, challenge maps, and new gameplay features are planned for upcoming versions.

Requirements

Minecraft: >= 26.1.2
Fabric Loader: >= 0.19.1
Fabric API: required
Java: >= 25

License

MIT License

Challenge library