Challenge library

Challenge Library

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

Create custom challenge runs in seconds, combine compatible challenges, 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 - 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 - Start, stop, and resume challenge sessions - Synced session flow for multiplayer - Clear feedback via chat, actionbar, and HUD - Persistent config/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 boss 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/dimension).

- Mob Drop Randomizer Mob drops are randomized by mob type.

- Changing Gravity Gravity state changes over time.

- No Jumping Jumping is fully disabled.

- Ultra Fog Visibility is heavily reduced.

- Ultra Hardcore No natural regeneration; death is heavily punishing.

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

Development Status

Challenge Library is in active development. More challenges, balancing updates, and new gameplay features are planned for upcoming versions.

Requirements

- Java: `>= 26.1.2` - Java: `>= 0.19.1` - Java: required - Java: `>= 25`

License

MIT License