Randomized Block & Mob Drops

Install the matching file

Choose the file for your Minecraft version and mod loader. Install its listed dependencies, then put the mod file in your instance’s mods folder.

How It Works

Load a world. RBMD automatically:

1. Scans all loot tables to find every naturally obtainable item
2. Shuffles them using your world seed
3. Writes a datapack and reloads — drops are active immediately

If you change your config or mod list, RBMD detects the change and rebuilds the datapack using the same seed on the next world load. No manual steps needed.

🔁 Want completely new drops? Run /rbmdreshuffle at any time.

Commands

Both /rbmdfind and /rbmdmob support tab completion — start typing minecraft: or mymod: and it will suggest matching items and mobs.

Debug commands (OP only)

💡 Use /rbmddump to review all changes and copy IDs straight into the blacklist config.

Notes

• Wrong tool = no drop — same as vanilla. A block that needs a pickaxe drops nothing without one.
• Same seed = same drops — two worlds sharing a seed will have identical randomization. Use /rbmdreshuffle to override.
• Each world is independent — worlds store their own seed and config hash in datapacks/rbmd_randomizer/. Switching between worlds never affects each other.
• Adding or removing mods — detected automatically. Drops will shift slightly since the pool size changes, but the same seed is reused so existing items stay as consistent as possible.
• Silk Touch — randomized by default. Set randomize_silk_touch = false if you want Silk Touch to always give the original block.
• Mods with hardcoded drops — mobs that skip the loot table system are still covered by an event hook on every mob death.
• Debugging — all output tagged [RBMD] in latest.log. Use /rbmddump to export a full human-readable list of every drop change.

Config

File: config/rbmd-common.toml

Changes are detected automatically on next world load — no need to run /rbmdreshuffle unless you want new drops entirely.

Item blacklist defaults — excluded because they can’t be obtained naturally: bedrock, barrier, command_block, chain_command_block, repeating_command_block, structure_block, structure_void, jigsaw, light, debug_stick, knowledge_book, bundle. Remove any entry to put it back in the pool.

Blacklist format — use full registry IDs:

item_blacklist = ["minecraft:diamond", "mymod:special_item"]
mob_blacklist  = ["minecraft:zombie", "mymod:boss"]
mod_blacklist  = ["mymod", "anothermod"]

🔴 Chaos Mode

Setting chaos_mode = true skips everything — blacklists, spawn egg filter, and the natural drop filter. Every registered item enters the pool. A warning appears in chat when you join with chaos mode on.

⚠️ Some items may become unobtainable in chaos mode. Use at your own risk.

Before changing your setup

Back up your world and configuration files before updating the project or changing its settings. Keep the old instance until you have checked that the updated setup works.

Get help

For help or bug reports, use Discord. Include the project file, Minecraft version, mod loader, and the steps that caused the problem.

Author and links

I create and maintain Randomized Block & Mob Drops as Dnydd (formerly known as dklyntly).

Official CurseForge page · Discord · GitHub source

License and permissions

Read the full license and the terms included with your downloaded version; permissions granted to earlier versions remain in effect.