CurseForge · Minecraft mod
Fate/Unlimited Block Works
Bring the holy grail war to minecraft
Quick answer
Which Fate/Unlimited Block Works release should I use?
Fate/Unlimited Block Works fateubw-1.21.1-2.3.1-fabric.jar targets 1.21.1 with Fabric. The project page does not say whether this file belongs on the client, dedicated server, or both. All 6 required mods have matching files.
Where it goes
Is Fate/Unlimited Block Works required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Fate/Unlimited Block Works fateubw-1.21.1-2.3.1-fabric.jar need?
fateubw-1.21.1-2.3.1-fabric.jar. Change the file and its required mods may change too.
Install SmartBrainLib (Forge/Fabric/Quilt), TenshiLib (Fabric), Forge Config API Port, Fabric API and 2 more first. We found matching files for this game-version and loader setup. 2 come through another mod in the chain.
2 extra mods were pulled in by other dependencies. Indented rows show who needs each one. We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Fate/Unlimited Block Works without breaking your instance.
Built for Fate/Unlimited Block Works fateubw-1.21.1-2.3.1-fabric.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use fateubw-1.21.1-2.3.1-fabric.jar. It targets 1.21.1 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install SmartBrainLib (Forge/Fabric/Quilt), TenshiLib (Fabric), Forge Config API Port, Fabric API and 2 more first. We found matching files for this game-version and loader setup. 2 come through another mod in the chain.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside fateubw-1.21.1-2.3.1-fabric.jar. It opens that exact file at the source.
About this project
What does Fate/Unlimited Block Works add?

⚔️ Fate/Unlimited Block Works
Fate/Unlimited Block Works is a mod based around the fate franchise from Type-Moon bringing the concept of the holy grail war to minecraft. The holy grail war is a ritual where magi fight with summoned servants for the right to claim the wish granting Holy Grail. The grail is able to grant the players with powerful loot and permanent buffs.
The mod includes an in-game Guidebook to help you with its mechanics. To access the book you need.
📖 Features
- Battle Royal system against other players/servants
- Summon powerful servants to fight alongside you
- Reward from the Holy Grail granting powerful gear and buffs
🏆 Holy Grail War Mechanics
Every few days a grailwar will start that you can join. The grail will announce to you when its time to join.
To join a grailwar you need the followings:
- Quite a bit of gem shards, obtained via mining, to craft mana gems

- A valid summoning altar setup
- This can be created by drawing a 5x5 area with chalk and the altar in the middle. Right-clicking it will then activate it.

Filling this altar with mana gems and then right clicking it once again will start the summoning process after which you will now be a part of the current grailwar. You will be granted 3 command spells when joining which have various use cases. Other players are also able to join this way. During a grailwar enemy servants without players might also spawn in case these slots are not already filled up by other players. Defeating all other servants will award you with the holy grail.
Pressing [H] with a summoned servant allows you to take control of them in various ways such as attack targets or movement patterns.

Servants have their own mana pool which will be used for nobel phantasm but you can also use up one of your command spells to immediately command them to use it.
Command spells also can be used to give your servant a temporary buff.
⚙️ Configurations
The mod is highly customizable via the standard config files. You can e.g. configure the amount of participants in a grail required to start a grail war or the max amount of participants.
Additionally changing attributes of servants or the loot tables the grail provides is possible via datapacks. For this please refer to the wiki for more information.
Project description from CurseForge.
Pick your setup
Fate/Unlimited Block Works by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.1
2 loader builds1.18.2
2 loader buildsCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Fate/Unlimited Block Works versions and loaders
fateubw-1.21.1-2.3.1-fabric.jar
29 Sept 2026
fateubw-1.21.1-2.3.1-neoforge.jar
29 Sept 2026
fateubw-1.21.1-2.3.0-fabric.jar
27 Sept 2026
fateubw-1.21.1-2.3.0-neoforge.jar
27 Sept 2026
fateubw-1.21.1-2.2.0-fabric.jar
23 Dec 2025
fateubw-1.21.1-2.2.0-neoforge.jar
23 Dec 2025
fateubw-1.21.1-2.1.3.b-fabric.jar
22 Oct 2025
fateubw-1.21.1-2.1.3-fabric.jar
19 Oct 2025
fateubw-1.21.1-2.1.3-neoforge.jar
19 Oct 2025
fateubw-1.21.1-2.1.2-neoforge.jar
2 Oct 2025
fateubw-1.21.1-2.1.2-fabric.jar
2 Oct 2025
fateubw-1.21.1-2.1.1-beta-neoforge.jar
25 Sept 2025
Looking for an older file? The official CurseForge project page is in Resources.