Sulfur Cubes, New Caves, and More in BE Preview 26.20.23

The first features from the Chaos Cubed game drop are now available in Minecraft Bedrock Edition Preview 26.20.23. This is the second game drop of 2026, and it introduces a new underground biome, a unique mob, and two full block sets.

Sulfur Cube

The sulfur cube is a passive mob found in sulfur caves. What makes it unique is that it absorbs blocks fed to it by the player and changes its physical behavior based on what it eats. Different blocks make it bounce, slide, or behave in other ways. The physics system is still being tuned, so expect changes in future previews. Since Minecraft LIVE, the mob's texture has already been updated based on community feedback, with added freckle-like dots that make it look a bit cuter.

Sulfur Caves and Sulfur Springs

Sulfur caves are a new underground cave type filled with shallow water pools, glow lichen, yellow sulfur blocks, and red cinnabar blocks. You can find them by locating sulfur springs on the surface, which are identifiable by their distinct blocks and noxious gas rising from bubbling pools.

The gas comes from potent sulfur, a new block that creates bubble columns when placed under water. It also triggers a nausea effect on players and mobs that get too close, so building with it requires some caution.

Cinnabar and Sulfur Block Sets

Both cinnabar and sulfur come as full block sets. You can cobble them, craft bricks, cut stairs and slabs, and use the chiseled variants for decorative builds. Cinnabar adds deep reds to the palette and sulfur brings bright yellows, giving builders two strong accent colors that didn't exist in vanilla before.

All Chaos Cubed features are currently behind an experimental toggle and still in active development. Mojang is encouraging players to test and share feedback, especially around the sulfur cube's physics.