Chunk Swap

Once a set number of seconds runs out, the chunk under the player is exchanged for a random chunk pulled from another place in the same dimension, so the terrain, structures, chests, spawners, ores and fluids of the old chunk are replaced instantly. A player can go from a forest to a cliff edge, the middle of an ocean, the inside of a village or a hover over a ravine within a single tick, and the world beneath their feet cannot be trusted.

Swaps stay inside one dimension: the Overworld trades with the Overworld, the Nether with the Nether, and the End with the End. The chunk selection always pulls one at least 512 blocks away from the player to keep each swap disruptive. A live HUD countdown sits above the hotbar and turns red when three seconds remain, and a warning sound plays before each swap.

Chunk Swap is built for Fabric and needs Fabric API, so both must be installed. Every player and the server need a copy of the mod. It is released under All rights reserved, and the source code is publicly available. Eight game versions carry files, with 1.0.0 for 1.21.11 as the latest build published on 2026-05-25.