One More Chunk

Start with one chunk. Discover the rest of the world yourself.

One More Chunk is a survival world-generation mod that places you on a single, full-height, naturally generated Overworld chunk surrounded by void. Craft and use Chunk Seeds to reveal adjacent chunks one at a time. Each revealed chunk comes from the same world seed at its original coordinates, so terrain heights, caves and biomes connect naturally as your world grows.

Getting started

Create a new world with the One Chunk world type, which is preselected while the mod is installed. Open the starter chest for basic supplies and your first two Chunk Seeds. Face a neighboring locked chunk and use a seed to reveal it.

To craft more Chunk Seeds, combine one log, four cobblestone and one coal or charcoal. Press J to open the Chunk Journal and see your nearby unlocked chunks and total progress; press R in the journal to refresh it. Successful unlocks give a brief notification above the hotbar instead of filling your chat.

Compatibility and beta limitations

This beta is for Minecraft 1.20.1 with Forge 47.4.20 or newer. Create a new world for the intended experience. The Nether and End retain their normal generation.

Live entities are not copied from hidden terrain. For example, a revealed village may have its buildings and loot but not its original villagers. Multiplayer gameplay, dedicated servers, structure locating and complete survival progression have not yet been independently verified. Early development worlds are not supported as migration targets.

The chunk-by-chunk survival concept was inspired by Chunk By Chunk by dividesBy0/immortius. One More Chunk is an independent implementation with its own handheld Chunk Seeds and progress journal; the original mod is not included.