Altered - Random Chunks
Java data pack listed for Minecraft 26.x. Downloads from the MC Java Mods app on Android.
Random Chunk — when you walk into a new chunk, every solid block in it turns into one randomly chosen block type.
⬇ Download on Modrinth
Random Chunk is a Minecraft Java datapack where walking into a new chunk replaces every solid block in it with one randomly chosen block type. Air, water, and lava are left alone.
How it works
- Step onto a chunk you have not visited yet — all solids become the same random block
- The actionbar shows which chunk was converted and what it became
- Return later and the chunk stays as it was
- Overworld, Nether, and End are tracked separately
- The spawn chunk is converted on first load too
The pool includes stone, deepslate, planks, logs, concrete, wool, terracotta, ores, nether blocks, end stone, glass, ice, slime, honey, and a lot more — one type per chunk.
Install
Drop the zip into the world’s datapacks folder, then run /reload.
Op commands
/function randomchunk:pause /function randomchunk:resume /function randomchunk:toggle
Made for Minecraft Java 26.1–26.3 and newer.
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 26.1, 26.1.1, 26.1.2
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — see the MC Java Mods guides for the full walkthrough.
- Downloads as RandomChunks.zip
- Download size: 7 KB
- Download link checked 18 Oct 2026 — working
These come from our own check of the pack file, not from the source page.