
Ultimine Unchained
A companion mod for FTB Ultimine. Mine the whole shape. Without destroying your tool.
About this Mod
FTB Ultimine skips blocks harder than the one you clicked, and charges a point of durability for every block it breaks. Ultimine Unchained mines the whole shape your tool can handle and caps what one operation costs you.
Minecraft 1.21.1 on Fabric or NeoForge, and 1.20.1 on Fabric or Forge. Needs FTB Ultimine and Architectury API.
⭐ What It Does
This is a Mixin patch for FTB Ultimine, not a vein-mining mod of its own. Every shape, key and target still comes from FTB Ultimine. It changes three things about what an operation does.
- It respects your shape - FTB Ultimine compares every block against the first one you targeted and skips anything harder, even when your tool would mine it fine. That check is suppressed by default.
- Truly unbreakable blocks are still skipped - bedrock, barriers, anything with a negative destroy speed, whatever the setting says.
- Durability costs what you decide - one flat cost in block-break equivalents for the whole operation, or a percentage of the blocks actually broken.
- Unbreaking still counts - each point of calculated damage is rolled against the enchantment, the same as vanilla tool damage.
- One operation can never gut a tool - the cost is capped at a percentage of maximum durability, 25% by default, so a 2000-durability tool loses at most 500 in one go.
- And never breaks one - the cost stops one point short of destroying the tool. Creative players pay nothing.
📋 Requirements
- Minecraft 1.21.1 on Fabric or NeoForge, and 1.20.1 on Fabric or Forge.
- FTB Ultimine on every loader. This mod does nothing without it.
- Architectury API 13.0.8 or later on every loader.
- Fabric API, Fabric Loader 0.19.2 or later, and Cloth Config 15.0.140 or later, on Fabric.
- NeoForge 21.1 or later, on NeoForge.
- Java 21 or later.
📥 Installation
- Install your loader, FTB Ultimine and Architectury API, plus Fabric API and Cloth Config if you are on Fabric.
- Install with the Modrinth App, or download the jar for your version and loader into your
modsfolder. - Ultimine something with mixed block hardness. The whole shape breaks, and the tool costs one point.
⚙️ Configuration
On Fabric, edit config/ultimineunchained.json. On NeoForge, edit <world>/serverconfig/ultimineunchained-server.toml, which is per world and synced to clients. There is no in-game settings screen on either loader.
| Setting | Default | What it does |
|---|---|---|
allow_harder_blocks |
true |
Suppresses the harder-block skip, so every tool-compatible block in the shape breaks. |
durability_percentage |
0 |
Fraction of blocks broken that counts toward durability. Overrides the flat cost once above 0. |
durability_flat_blocks |
1 |
Flat cost per operation in block-break equivalents, 0 to 32768. Used while the percentage is 0. |
durability_cap_percent |
25 |
The most one operation may take, as a percentage of maximum durability, whatever the settings above ask for. |
Fabric writes the percentage as a whole number, so 50 means 50%; NeoForge writes it as a decimal, so 0.5 means the same. Setting the flat blocks, the percentage and the cap all to 0 removes durability cost entirely.
🖥️ Compatibility
- Existing worlds. Nothing is written to your world. Add it or remove it whenever you like.
- Client or server. It changes what an operation does, so it belongs wherever FTB Ultimine runs: the server, or the integrated server in singleplayer.
- It works with every tool type and every shape FTB Ultimine supports.
- It does not touch FTB Ultimine's right-click actions, tilling, stripping and harvesting, and does not change how drops are computed. It decides which blocks in the shape break and what the operation costs, nothing else.
- Blocks your tool cannot get drops from are skipped rather than broken.
- If a future FTB Ultimine build changes the method this patches, the game refuses to load rather than running as a silent no-op.
🐛 Support
- Report bugs and ask questions on this mod's Nexus Mods page, where every report is tracked.
- Include your Minecraft version, your loader and its version, the mod version, your FTB Ultimine version, and your other mods.
📄 License
License terms are in the Alkeari License Agreement.
Available Versions
How to Install Ultimine Unchained on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.1).
Install Mod
Open the mod browser in the dashboard and search for "Ultimine Unchained". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.1, 1.20.1
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Ultimine Unchained server crashes on startup – what to do?
Most common cause: wrong fabric 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 (1.21.1). You can switch loaders with one click in the panel.
Is Ultimine Unchained compatible with fabric and forge and neoforge?
Ultimine Unchained officially supports fabric, forge, neoforge for Minecraft 1.21.1, 1.20.1. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Ultimine Unchained – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Ultimine Unchained 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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