Minecraft Chaos Cubed (26.2): Everything New

Minecraft's Chaos Cubed update (Java Edition 26.2) went live on June 16, 2026, and it's a weird one in the best way. You get a new underground biome, a mob that changes how it moves based on whatever you feed it, geysers that throw you into the sky, two full block families, and the Friends List that Java players have been asking about for years. Here's what's actually worth knowing.

A toxic new world below

The big new area is the Sulfur Caves, an underground biome laced with bright yellow sulfur and deep-red cinnabar. Check the water pools and you'll find potent sulfur, which is the stuff that powers the update's geysers. You won't be down there alone, either. Sulfur cubes spawn in these caves, and cave spiders turn up too. Where a sulfur cave breaks the surface it forms a Sulfur Spring, and those come in four sizes from small to extra-large. They make a pretty reliable signpost when you're trying to track one down.

The Sulfur Cube: the block that eats blocks

The sulfur cube is the star of the update, and it's a strange little thing. It's a passive mob with 8 health that picks up whatever block you hand it, and that block completely changes the way it moves. Hold a block, interact with the cube, and it absorbs it. There are twelve archetypes in total, and each one gives it different physics:

Give it wood and it bounces all over the room. Hand it ice and it slides around like it's on a frozen pond. Give it TNT and, well, there's a reason the new “Uh Oh” advancement exists. Kill a large cube and it splits into two smaller ones, and feeding a small one slimeballs grows it back up. Found a cube you like? Scoop it into a Bucket of Sulfur Cube and take it home, or just spawn more with the new spawn egg.

Geysers: launch pads powered by chaos

Potent sulfur has a real use beyond looking good. Put a potent sulfur block on top of a magma block with water above it, and you've built a geyser. Every 50 seconds or so it erupts, and anything caught in the plume gets launched straight up, whether that's you, a mob, or a dropped item. The eruption itself won't hurt you, though the landing is your own problem. Set it up under lava instead of water and it erupts non-stop. More water above the block means a bigger launch, somewhere around seven blocks of plume for each water source. One thing to watch: every eruption puffs out a cloud of noxious gas that gives you nausea, so don't stand around at the top.

Sulfur blocks, start to finish

Sulfur shows up as a full building set, the same as any proper stone type. You get the base sulfur block plus stairs, slabs, walls, polished versions, bricks, and a chiseled variant, so you can put together a whole toxic-lab look without borrowing textures from anything else. The caves also grow sulfur spikes, the pointed speleothems that hang from ceilings and poke up out of the floor. Keep an eye on the ones overhead, because they can fall on you. Four spikes craft back into a single sulfur block, and if you'd rather not mine your own, wandering traders sell them now.

Cinnabar: the update's red stone

Cinnabar is the deep-red counterpart to sulfur, and it's the block most people will actually build with. You mine it straight out of the sulfur caves and springs with any pickaxe, and it comes with the same complete set of stairs, slabs, walls, polished cinnabar, bricks, and a chiseled variant. On its own it's purely decorative, but that rich crimson color is genuinely hard to get anywhere else in the game, which makes it a great pick for reds, accents, and anything volcanic. Pair it with sulfur's yellows and you've got a whole palette straight out of the caves.

A built-in Friends List for Java

Java finally has a proper built-in Friends List. You can open it from the title screen or the pause menu, or just hit the new O keybind. From there you send and accept requests, and you can see whether each person is Offline, Online, or already In a world. Requests come in as toasts with the sender's skin on them, and there are privacy settings for who's allowed to add you and how much of your status you share. It sounds like a small thing, but hopping into a friend's world is a lot less of a hassle now.

Experimental Vulkan support

One of the bigger under-the-hood changes is experimental Vulkan support. A new Graphics API option in the video settings lets you switch the game from OpenGL to Vulkan, a more modern graphics backend that can run more efficiently on a lot of hardware. It's still experimental, so it quietly falls back to OpenGL if anything goes wrong, and on macOS it runs through MoltenVK. If you've been chasing frames it's worth a try, just don't be surprised if a mod or two needs to catch up first.

A few other changes

Rounding things out: there's a new music disc, “Bounce” by fingerspit, hidden in mineshaft minecarts down in the sulfur caves, along with five new ambient tracks. Ocelots, piglins, and zombie horses can spawn on Peaceful now, too. The full changelog goes a lot deeper, but that covers the parts most people will actually run into.

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