
Frozen Nether Roof
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Braytonk's Frozen Nether Roof
This datapack adds a frozen sub-dimension on top of the Nether roof, which can be accessed through the new Nether Gateway structures that generate throughout the Nether. In this frigid wasteland, you can find new biomes, mobs, and Stray Tower structures containing a unique miniboss fight.
Biomes
Ice Flows
The first biome you will encounter, the Ice Flows, are a network of icy pathways spreading across the Nether roof. Breaking through the ice with jagged spikes, you will find its two sub-biomes, the Ice Pillars and the Basalt Pillars.
Frozen Wastes
The frigid mirror to the familiar Nether Wastes, the Frozen Wastes are a barren expanse of snow sprinkled with pockets of powdered snow.
Icecap Forest
Breaking the monotony of the endless wastes, the Icecap Forests spring up from soulsand patches with strange basalt and ice tree-like features.
Blackstone Peaks
Cutting deep into the frozen Nether sky, these menacing mountain ranges are formed from the underlying blackstone. A long fall is not the only danger that awaits you in these precipitous heights.
Structures
Nether Gateway
These imposing spires connect the lower Nether to its frozen roof, and are located in Ice Pillars or Basalt Pillars in the middle of the Ice Flows. Watch out for the Wither Skeletons and Magma Cubes in the toasty lower level and for Strays and Ice Cubes in the frigid upper level.
Navigation Tower
These mysterious structures can be found in any biome in the lower Nether. They contain wither skeletons and a diorama of the Nether with a lodestone at the top, representing its matching Stray Tower.
If the Updated Nether Fortress datapack is present, the Navigation Tower generates with Nether Fortress bridges around itself.
Stray Tower
Use a Nether Gateway to get to the roof and follow the lodestone in a Navigation Tower, and you will find the matching Stray Tower perched atop the Blackstone Peaks. Brave the Strays and deteriorating ice floors to reach the Stray Champion at the top.
Mobs
Ice Cube
The Ice Cube is the frozen cousin of the Slime and Magma Cube. When killed they split into smaller Ice Cubes and drop snowballs. The Ice Cube spawns in the upper level of the Nether Gateway, and can be summoned by the Stray Champion.
Stray Champion
This miniboss waits for you at the top of the Stray Tower. Once challenged, it will raise a frozen arena for the duel. Damage it sufficiently or knock it down a level to progress through the three phases of the fight. At each phase it attacks more and breaks more ice with each attack. Can you prove yourself the spleef champion and defeat it before you succumb to the cold or fall to your doom?
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 26.1, 26.1.1, 26.1.2
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — see the MC Java Mods guides for the full walkthrough.
- Ships as frozen-nether-roof-1.0.1.jar — drop this file into the mods folder
- Download size: 1.2 MB
- Download link checked 7 Sept 2026 — working
These come from our own check of the pack file, not from the source page.