Minecraft but Chunks are Random
Minecraft but Chunks are Random changes the block that forms each chunk, so a world's terrain can differ from the usual layout.
What it does
Each chunk receives one randomly chosen block that replaces the block at its position. Players can change the block of the current chunk with a command, reroll it to pick a new random block, or set it by holding the block in the main hand. The mod can also be installed as a data pack instead of a loader mod, which lets it run on servers that use data packs.
A blacklist controls which blocks may appear in chunks. Players can open a menu to toggle individual blocks, clear the whole list, or apply preset groups of large blocks in one step. The mod has a built-in uninstall command that removes only the data pack version. The server must run the mod, while players may add it to their clients.
Files are published for Fabric, Forge and NeoForge, and the data pack variant is also available. Builds cover 1.20 – 26.2 across 23 release versions, with the latest file v1.1-mod for 26.2 dated 2026-06-20. The mod is released under All rights reserved and is not open source. Credit to AmbiguousChameleon must be given when the mod is used in videos or packs.
Key features
Random chunk blocks
Every chunk is assigned a randomly selected block that replaces the chunk's normal appearance.
Chunk block command
The ac.random chunk.set command changes the current chunk's block, and holding a block in the main hand can set it instead.
Reroll and blacklist
A reroll command picks a new block for the current chunk, and a blacklist menu controls which blocks can appear in chunks.
Blacklist presets
A presets menu adds groups of large blocks to the blacklist at once, and a clear command empties the list.
Gallery
Compatibility
Latest build for each game version and loader.
26.x4 of 4 versions with builds
1.21.x12 of 12 versions with builds
1.20.x7 of 7 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Video content
Creators who make videos with a modpack can use the mod to produce randomized terrain for their recordings, provided credit is given.
Who it’s for: Server owners and players who want chunks to vary in appearance. The server must run the mod, while players can install it as well.
How it compares
Random Chunks is server-side only, open source under the MIT License and published for 1.20 – 1.21. Random Bone Meal Flowers is server-side only, not open source under All rights reserved, and covers 1.16.5 – 26.3 on Fabric, Forge, NeoForge and Quilt. Random OneBlock runs on the client and server, uses the Apache License 2.0 and covers 1.20.1 – 1.21.11.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Minecraft but Chunks are Random | Fabric, Forge and NeoForge | 1.20 – 26.2 | Server required, client optional | 2026-06-20 |
| Random Chunks | Fabric, Forge and NeoForge | 1.20 – 1.21 | Server-side only | 2024-06-28 |
| Random Bone Meal Flowers | Fabric, Forge, NeoForge and Quilt | 1.16.5 – 26.3 | Server-side only | 2026-10-11 |
| Random OneBlock | Fabric, Forge and NeoForge | 1.20.1 – 1.21.11 | Client and server | 2026-02-20 |
Questions
Does the server need Minecraft but Chunks are Random?
Can the mod be used without a loader?
How is the chunk block changed?
In the catalog
Minecraft but Chunks are Random is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 13,894 mods support Minecraft 26.2.
More from AmbiguousChameleon
Similar mods
What the author says
## Overview When stepping into a chunk, a random block is chosen to replace every block in that chunk. If you'd like to make a video or content using this pack, go for it! If you do so, you must provide credit to me (Ambiguous Chameleon) and provide a link to this pack in the description and/or comments. Thank you!
Official listing
- Modrinth page
- modrinth.com/mod/minecraft-but-chunks-are-random
- Owner
- AmbiguousChameleon
- Published
- 2025-12-08
- Updated on Modrinth
- 2026-06-20
- Facts verified
- 2026-10-15