Chunk Swap
Every selected number of seconds, the chunk you are standing in will swap with a new chunk in the same dimension
About this Mod
⚡ ChunkSwap
The world beneath your feet can't be trusted. Every few seconds, the chunk you're standing on gets replaced with a completely random chunk from somewhere else in the world. You stay exactly where you are — but everything around you changes instantly.
What does it do?
When the timer hits zero, the 16×16 chunk you're standing in is swapped with a random chunk pulled from somewhere else in the same dimension. One second you're in a forest. The next you're on a cliff edge, in the middle of an ocean, inside a village, or hovering over a ravine. Terrain, structures, chests, spawners, ores — all of it swaps instantly. You never know what's coming.
Commands
| Command | Description |
|---|---|
/start <seconds> |
Start the challenge, swapping every X seconds |
/pause |
Freeze the timer |
Features
⏱ Live HUD countdown above the hotbar — turns red at 3 seconds remaining
🔔 Warning sound before each chunk swap
🌍 Same-dimension only — Overworld swaps with Overworld, Nether with Nether, End with End
📦 Full chunk contents swapped — terrain, fluids, structures, chests, spawners, and ores
🚀 Safe chunk selection — always pulls from at least 512 blocks away to maximise chaos
Requirements
- Minecraft 1.21.4
- Fabric Loader
- Fabric API
Featured in a video by Divinxxii
Available Versions
How to Install Chunk Swap on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).
Install Mod
Open the mod browser in the dashboard and search for "Chunk Swap". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.11, 1.21.10, 1.21.9 (+5 more)
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Chunk Swap server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.
Is Chunk Swap compatible with fabric?
Chunk Swap officially supports fabric for Minecraft 1.21.11, 1.21.10, 1.21.9. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Chunk Swap – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Chunk Swap consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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