Chunk Challenge
by felixthein
Chunk Challenge turns a survival run into a challenge where each new chunk entered transforms the surroundings for the player.
What it does
Each player has a personal world border that locks them inside their current chunk. Inside it a random mob spawns, and every block in the chunk is replaced with one randomly selected block type. A glowing mob blocks the path out until it is defeated, after which the border moves on to the next chunk. Each player advances on their own, and the state of every player is kept separately for the world they play in.
The challenge is active once entering a new chunk triggers it, and the mod offers several difficulty modes with progressive difficulty scaling. Clearing challenges can grant optional reward chests and milestone rewards. Admin and debug commands support testing, and the command chunkchallenge help lists the full command information. The mod is designed for multiplayer and works on servers without a client mod.
Installation needs Fabric on the server, and the mod is published for Fabric only, for 1.21.11. A server must run Chunk Challenge, while players may leave it out, since it works without a client mod. The code is released under the MIT License, which allows free use and modification, but the project is not open source.
Key features
Per-player chunk borders
A personal world border keeps each player inside the current chunk until the challenge there is cleared.
Randomized chunk contents
Random mobs spawn in the chunk, and every block in it is replaced with one randomly chosen block type.
Progressive rewards
Optional reward chests and milestone rewards are given for clearing chunks, with difficulty scaling as the run goes on.
Multiple difficulty modes
Several difficulty modes change how the challenge is set up, and the mod works in multiplayer with server-side compatibility.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Chunky-Challenge is a Fabric mod for 1.21.11 with a client and server environment, released under the MIT License and not open source. Challenges is server-side only, open source under the GNU General Public License v3.0 only, and covers 1.21.1 – 26.2. Unlocked World Border is open source under the Apache License 2.0, requires both client and server, and covers 1.21.4 – 1.21.11.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Chunk Challenge | Fabric | 1.21.11 | Server required, client optional | 2026-02-18 |
| Chunky-Challenge | Fabric | 1.21.11 | Client and server | 2026-08-01 |
| Challenges | Fabric | 1.21.1 – 26.2 | Server-side only | 2026-07-18 |
| Unlocked World Border | Fabric | 1.21.4 – 1.21.11 | Client and server | 2026-02-09 |
Questions
Does Chunk Challenge need a client mod?
Which Fabric version does Chunk Challenge support?
Is progress shared between players?
In the catalog
Chunk Challenge is one of 2,135 Minigame mods on ModsFinder, and one of 1,454 Minigame mods for Fabric. 19,862 mods support Minecraft 1.21.11.
Similar mods
What the author says
Chunk Challenge is a Fabric mod that turns Minecraft into a progressive survival challenge — one chunk at a time. Every time you enter a new chunk, the world transforms around you: a randomized mob appears, a personal border locks you in, and all blocks in the chunk are replaced with one randomly selected block type…
Official listing
- Modrinth page
- modrinth.com/mod/chunk-challenge
- Owner
- felixthein
- Published
- 2026-01-31
- Updated on Modrinth
- 2026-02-18
- Facts verified
- 2026-10-15