Better Cubic Chunks

Beta. An early release: expect bugs, and back up your worlds before trying it. Report problems on the Discord.

Cubic chunks for Minecraft 1.21.1 on Fabric and NeoForge. The world is generated, saved, sent and drawn in 16×16×16 cubes instead of full-height columns, so a world can be tens of thousands of blocks tall and only the cubes around players exist.

How to use

Generate a world using the Default (Cubic) option, vanilla's terrain as it is, with room to build up to Y 16 383 and dig down as far (caves generate below -64).

32 768 blocks tall by default, about a million with the HUGE preset. Normal world types are untouched.

Performance

• Only the cubes around players are loaded; everything above and below costs nothing.
• Generation runs on worker threads, nearest cubes first, several stacked cubes in one pass.
• Far-off cubes are generated on fewer threads, so the frame rate holds while terrain fills in.
• Separate vertical view and load distance, with its own slider.

Compatibility

• Other mods still see normal chunk columns, so most work unchanged. Structure mods work; biome mods partly.
• Sodium, Iris, Immersive Portals (portals into the sky work), Xaero's World Map and Minimap, JourneyMap have been integrated.

Distant Horizons

With Better Distant Horizons the LODs are 3D cubes too: detail drops with distance up and down, only the space around you is generated and drawn, underground sections wait while you are in daylight, and real chunks are handed over with their real light. Normal Distant Horizons 3.3 works too, without the 3D LODs.

Realistic Earth

Realistic Earth: the real Earth at any scale, built on Better Cubic Chunks. At life size Everest is 8 849 blocks tall and the Mariana Trench 11 km deep.

Requirements

Minecraft 1.21.1, Java 21, Fabric (with Fabric API) or NeoForge 21.1. Needed on the server and on every client; a client without it gets a clear message instead of a broken world. Better Distant Horizons is optional.

Related mods

The other two mods of this set

Fabric and NeoForge 1.21.1, on the server and every client. Free to use in modpacks.