Key takeaways
- Minecraft 26.4 Snapshot 3 adds the Ice Caves biome, Ice Crystals and Icicles, the first look at the winter game drop shown at Minecraft LIVE.
- Ice Caves generate under cold surface biomes and are built mainly from Packed Ice and Calcite, with Glow Lichen deliberately absent.
- The same snapshot ships a rebuilt Friends list with search and sorting, and replaces the Social Interactions screen with Other Players.
Mojang used Minecraft LIVE to reveal the next game drop, and Snapshot 3 of the 26.4 cycle is the playable half of that reveal. The theme is cold. A new cave biome made of Packed Ice and Calcite now generates below the snowy surface biomes, two new decorative block families grow inside it, and a new hostile mob patrols it. Everything in this snapshot is marked as experimental in the sense that Mojang has opened a feedback site specifically for the winter drop, so the numbers and the generation rules are the ones most likely to move before release.
If you have been following the 26.4 snapshots so far, this is a sharp change of pace. Snapshot 1 was a renderer release that made Vulkan the default, Snapshot 2 was mostly a sky and occlusion cleanup, and both read as plumbing. Snapshot 3 is content. Below is what actually generates, what the new blocks do, and which parts of it are worth loading a throwaway world for.
How the Ice Caves biome generates
The Ice Cave is a cave biome, not a surface one. It generates underneath the colder Overworld biomes, which means your route to one starts on a snowy plains, snowy taiga or frozen peaks surface and goes down. It is built mainly from Packed Ice and Calcite, which is an unusual pairing – Calcite previously only appeared in amethyst geodes, so seeing it as a bulk cave material is new.
Three generation details matter for anyone exploring one:
- Icicles hang from the ceiling throughout, and larger Packed Ice icicles generate both on the floor and from the roof.
- Patches of Snow generate occasionally on the ground, and Ice Crystals appear on the floor in small numbers.
- Ores still generate normally, embedded in pockets of Stone and Deepslate rather than directly in the ice.
The deliberate absence is Glow Lichen. Mojang has explicitly stopped it generating in this biome, and combined with the fact that Icicles only grow in areas without nearby light sources, the design intent is clear – Ice Caves are meant to be dark. That changes how you prepare for one. Our guide to light levels covers the thresholds that decide what spawns where, and in a biome with no ambient lichen glow those thresholds are doing all the work.
Mob-wise, the normal cave spawn list still applies, plus Strays and the new Frostbite. Strays in a cave biome is itself a change worth noting, because it moves a mob that was previously tied to surface snow into an underground context where there is nowhere to retreat to.
Ice Crystals and Icicles
Ice Crystals behave like Amethyst Clusters. They break if their support block is removed, they emit light, and they can be placed in any direction. A light-emitting ice block that can be placed on walls and ceilings is a genuinely useful building item, and it will immediately show up in cold-palette builds – our interior lighting notes go into why a light source you can hide in a ceiling is worth more than one you have to stand on the floor.
Icicles are the more mechanically interesting of the two. They are speleothem blocks in the same family as Dripstone and the Sulfur Spikes added earlier in this cycle. The rules:
- They grow naturally up to five blocks long when pointing downward.
- They only grow away from nearby light sources, and never in the Nether.
- They have base, middle and tip variants and can be placed in any direction.
- They damage entities when they fall, and deal extra damage to anything that lands on them.
- Pointed blocks break when exposed to a nearby light source, or when placed in the Nether.
That last rule is the one that will catch builders. An Icicle you place in a lit room will not stay there. If you want icicles as decoration, the room has to be dark, which pushes them towards exterior eaves and unlit caverns rather than interiors.
The Friends list rebuild
The social half of this snapshot is substantial enough that it would have been a headline on its own in a quieter week. The Friends list has a new design, a search box, and a sort button that cycles between online-first and alphabetical order. In the requests tab a search box appears once you have fifteen or more pending requests, which is a small detail that tells you something about who Mojang is designing for.
Two renames come with it. The Social Interactions screen is now Other Players, and the keybind formerly called Social Interactions carries the new name. The Friends button has a new icon, the Visibility option has moved out of Online Options and into the Friends list itself, and the icon buttons in the pause menu have been reordered to match the main menu. None of that breaks anything, but if you run a tutorial series or a server wiki, the screen names in your screenshots are now wrong.
Smaller changes worth knowing
Snow can now be placed on Packed Ice, which removes a long-standing placement oddity and matters more than it sounds for snowy builds. Snowballs now apply knockback to players, which is a combat change dressed up as a tweak. And the lightmap visualisation is now a configurable debug option called lightmap_texture, grouped under Light, savable with a debug profile, and displayable alongside the FPS and network charts.
That debug change is a direct follow-on from the F3 overlay redesign earlier in this cycle. Mojang is steadily moving debug tooling from hardcoded key combinations to a configurable profile system, and each snapshot adds another thing you can switch on from the options rather than remember a shortcut for.
Our read on it
The thing that stands out is how much of this snapshot is about denying light. Glow Lichen does not generate. Icicles will not grow or stay near light sources. The biome is Packed Ice and Calcite, both of which read bright in screenshots but emit nothing. The only native light in an Ice Cave is the Ice Crystal, which is rare enough on the floor that it functions as a reward rather than illumination.
Read against the last two years of cave content, that is consistent. The Deep Dark took away your ability to make noise. Ice Caves take away the ambient glow that made lush caves and dripstone caves navigable without torches. Mojang keeps finding ways to remove one assumption at a time rather than adding difficulty through mob health numbers, and it keeps working.
Because this is a snapshot tied to an open feedback site, treat the numbers as provisional. Mod compatibility is the usual story – our mod support tracker covers which libraries have moved to the 26.4 line, and a new biome plus a new mob plus a new effect means worldgen and entity mods will need another pass.
Images: Frostiful project gallery.