
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.
Screenshots

About this Mod
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.
Available Versions
How to Install Bunker Building Blocks on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set forge Loader
In the panel under "Egg", select the forge loader and matching Minecraft version (1.20.6).
Install Mod
Open the mod browser in the dashboard and search for "Bunker Building Blocks". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.20.6, 1.20.5, 1.20.4 (+3 more)
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Bunker Building Blocks server crashes on startup – what to do?
Most common cause: wrong forge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.20.6). You can switch loaders with one click in the panel.
Is Bunker Building Blocks compatible with forge and neoforge?
Bunker Building Blocks officially supports forge, neoforge for Minecraft 1.20.6, 1.20.5, 1.20.4. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Bunker Building Blocks – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Bunker Building Blocks consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install Bunker Building Blocks with just one click on your server.