Minecraft's Chaos Cubed Update: Sulfur Caves and the Block-Eating Sulfur Cube

Minecraft's Bedrock Edition got genuinely strange in June — in the best way. Chaos Cubed, the second game drop of 2026, dug a whole new biome into the underground and dropped in one of the most delightfully odd mobs the game has added in years: a bouncing cube that eats your blocks and changes its physics depending on what it swallowed.

If you haven't updated yet, here's a full breakdown of what's in Chaos Cubed, how it plays, and how to get it.

What Is Chaos Cubed?

Chaos Cubed is a game drop that launched on June 16, 2026, arriving as Bedrock Edition 26.30 and Java Edition 26.2. It's the second of 2026's named drops — following March's Tiny Takeover — under Minecraft's new year-based release system. (New to that whole system? Our guide to everything new in Minecraft in 2026 explains the versioning shift.)

Where Tiny Takeover was a gentle polish drop, Chaos Cubed is an ideas drop. Its entire theme is a new underground area and the very weird creature that lives there.

Welcome to the Sulfur Caves

The centerpiece is a brand-new cave biome: the sulfur caves. Dig deep enough and you'll break into caverns glowing with yellow sulfur blocks and streaked with red cinnabar, studded with jagged sulfur spikes. It's an instantly distinct place — nothing else underground looks like it.

It's not just decoration, either. Sulfur caves contain sulfur pools: pockets of water ringed by sulfur, with "potent sulfur" generating at the bottom. Placed underwater, potent sulfur bubbles up and releases a cloud of noxious gas at the surface — and any player or mob that swims into water touching that gas gets hit with Nausea. It turns the caves into a hazard you have to read and navigate, not just mine.

One more twist: in the sulfur caves, cave spiders spawn in place of regular spiders, so the usual underground threats get a little more venomous down here.

Meet the Sulfur Cube

The drop's namesake is the sulfur cube, and it's the best part. On its own, it's a harmless passive mob that spends its time aimlessly bouncing around the caves. The magic happens when you feed it a block: the cube absorbs it, and its physical properties change based on what it just ate.

• Feed it wood and it turns springy, bouncing around like a rubber ball.
• Feed it ice and it goes slick, sliding across surfaces like a hockey puck.
• Different materials produce different behaviors — half the fun is experimenting to see what each one does.

It's classic Minecraft design: a simple, systemic toy with emergent possibilities, dropped into the world for players to figure out and build contraptions around. Expect the community to find uses for it that Mojang never planned.

New Building Blocks: Sulfur and Cinnabar

Chaos Cubed isn't only for explorers. The two new material sets — sulfur and cinnabar, each with their own block variants — give builders a bold new yellow-and-red palette to work with. If you've been wanting warmer, more volcanic tones for a build, the sulfur caves are now your quarry.

Under the Hood: Bedrock 26.30

Chaos Cubed also folded a batch of previously experimental toggles into the base game and flipped on texture streaming by default on supported platforms — a behind-the-scenes change that helps with memory and load times. As usual, a couple of quick hotfixes followed (26.31 on June 19 and 26.32 on June 25) to squash bugs, including a frame-rate issue that could lock some devices to 30 FPS.

How to Play Chaos Cubed

On Bedrock Edition, you don't have to do anything special — the update installs automatically through your platform's store, so as long as your device is online and up to date, you already have it. Not seeing it? Check for updates in the Microsoft Store (or your console/mobile store), and make sure you're on version 26.30 or later. Marketplace content that targets the new features will need a current client to load, so updating is worth it.

Chaos Cubed on the Marketplace

The Marketplace moved fast. There's already official Chaos Cubed content you can grab — free — to extend the theme:

And if the new caves left you hungry for more underground adventure, these are the most popular cave and mining experiences on the Marketplace right now:

Browse more in the world templates catalog, or check the releases feed for the newest arrivals.

The Bottom Line

Chaos Cubed is a small drop with big personality. The sulfur caves add a genuinely new place to explore, the noxious-gas hazard gives them teeth, the sulfur and cinnabar blocks hand builders a fresh palette, and the sulfur cube is exactly the kind of weird, systemic creature that keeps Minecraft feeling alive. It's free, it's already installed if your Bedrock game is current, and it's well worth digging into.

For the full picture of Minecraft's year, see our roundup of everything new in Minecraft in 2026, or explore the Marketplace for content to play next.

Sources & further reading:

• Chaos Cubed Drop — Minecraft.net
• Chaos Cubed — Minecraft Wiki
• Bedrock Edition 26.30 — Minecraft Wiki
• Minecraft Updates Timeline — Minecraft.net