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.

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.

• No Tools
  Tools are disabled for a harder survival experience.

• None
  A clean starting point with no active challenge.

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