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Bunker Building Blocks

Introducing a variety of blast proof building blocks, perfect for decoration and securing your base against griefing without the need for claim mods or peaceful mode.

NeoForgeForge
Loaders
NeoForgeForge
Downloads on Modrinth
666
Followers on Modrinth
1
version
1
Updated
March 16, 2026Mar 16
Published
in 2026

At a glance

Runs on NeoForge and Forge
For Minecraft 1.20.1–1.20.6
Needed in the game and on the server
Latest version — 1.0.0 from March 16, 2026
License MIT — free
Where it's needed
In gamerequiredOn serverrequired

Needed both in the game and on the server

Game versions1.20.1–1.20.6

Bunker Building Blocks

Ever wanted to build a proper blast-proof bunker but hated that obsidian can't be moved with pistons? Yeah, me too.

Obsidian Alloy is a new building material that combines the blast resistance of obsidian with the flexibility of normal blocks. Build your secure bases, hidden vaults, and TNT-proof redstone contraptions without compromise.


The Blocks

  • Obsidian Alloy Block - Your basic building unit
  • Obsidian Alloy Bricks - Full block, slabs, stairs, and walls
  • Obsidian Alloy Tiles - Full block, slabs, and stairs
  • Chiseled Obsidian Alloy Brick - For when you want to look fancy while being indestructible
  • Obsidian Alloy Pillar - Rotatable, like quartz pillars
  • Obsidian Alloy Door & Trapdoor - Because your bunker needs an entrance

Why Use This?

Blast-proof - Same explosion resistance as obsidian (1200)

Piston movable - Unlike regular obsidian, you can use these in your redstone builds

Protects adjacent blocks - Blocks placed next to obsidian alloy won't be destroyed by explosions

Wither & Dragon immune - Nothing's getting through

Balanced - Requires a diamond pickaxe to mine

Crafting

Combine Copper Ingot + Obsidian to get Obsidian Alloy Ingots. The rest follows vanilla patterns - if you know how to make stone bricks, you know how to make these.

Full stonecutter support included because clicking is easier than crafting.

Compatibility

This is a simple block mod with no mixins or core mods. Should play nice with just about everything.

FAQ

How to install Bunker Building Blocks?

Install NeoForge for your Minecraft version, download Bunker Building Blocks for the same version and loader, put the file into the mods folder and launch the game with the loader profile.

Which Minecraft versions does Bunker Building Blocks support?

Bunker Building Blocks has builds for Minecraft 1.20.1–1.20.6.

Is Bunker Building Blocks needed on the server?

Needed in the game and on the server

License and source
MIT Licensefree to use and share with credit to the author
Original — Modrinth↗Files unchanged, verified with SHA-512Is this your mod? For rights holders

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