Minecraft Bedrock v1.26.30.5: Sulfur Caves & Sulfur Cube

The first stable release since v1.26.20.4, and it’s a themed one. A new cave biome, a mob built like a state machine, two full stone-block families, and Mojang finally shipping block collision shapes as data you can read.

Sulfur Caves

Sulfur Caves is an overworld cave biome tagged caves, monster, and overworld. Its subsurface builder paints the walls with a noise gradient: bands of cinnabar at the extremes and sulfur through the middle. Warm and a little damp (temperature 0.8, downfall 0.4), with its own fog setting and geyser particles. It’s the first biome to lean on the noise_gradient subsurface builder to lay down two blocks by depth.

The Sulfur Cube

The Sulfur Cube is the headline. On paper it’s a cousin of the magma cube: 8 health, small and medium sizes, herds of two to four spawning underground in its home biome. Underneath it’s the most stateful mob in the pack, carrying 24 component groups and an enum_property archetype that flips it between behaviors.

Absorb a block and the cube takes on its nature, the way a slime never could. It can go bouncy, sticky, fast, heavy, light, or highly knockback-resistant. Drop it in lava and it turns hot, dealing magma damage in a small radius with the death line “not just the floor is lava.” It can also turn explosive, lighting a fuse and detonating at power 3. You can shear the block back off it, hand it a block to carry, or scoop the whole mob into a Bucket of Sulfur Cube like an axolotl.

Sulfur and Cinnabar

Two complete block families arrive together, 34 blocks in all. Sulfur and cinnabar each get the standard treatment: raw block, slab, stairs, wall, polished variants, bricks, and chiseled. Sulfur also picks up potent sulfur and a sulfur spike. Seventy new recipes back them, most of them stonecutter paths so any tier converts to any other without a crafting grid.

Pushable, Rewired

Twenty-eight entities changed, and the through-line is the pushable to pushable_by_entity migration that began last release. Minecarts, boats, and the rideable animals like the camel now declare push behavior as filtered presets instead of a pair of booleans. The filters do real work: a sulfur cube with an active archetype can shove a player-driven vehicle, which is how the cube’s block-hauling wires back into the rest of the world. Format versions bumped to 1.26.30 across the batch.

Collision Shapes as Data

The quietest addition may outlast the sulfur. A new shapes/ directory ships 57 voxel_shape files that describe block collision and selection geometry as plain boxes: cactus inset to a 14-wide column, cake carved into seven bite states, composter filled in eight levels, plus anvils, fences, dripleaves, and bells. This geometry lived in the engine for years. Shipping it as data means tools can read exact block hitboxes instead of guessing them.