Random Block Placement
Place blocks from your inventory at random or with your own custom probabilities.
Whether you're building organic structures, adding variation to walls, or creating randomized patterns, this mod lets you control exactly how often each selected block is placed.
Random Block Placement is a client-side mod, meaning it works on any server without requiring installation on the server or any special permissions. It can be used in both Survival and Creative mode.
Demo
Features
- 🎲 Random block placement
- ⚖️ Custom weight/probability for every block
- 🎒 Works directly with blocks in your inventory
- 💻 Simple in-game configuration menu
- ⚡ Toggle the mod on or off instantly
- 🌐 Client-side only — no server installation required
- ⛏️ Works in both Survival and Creative mode
How to Use
1. Open the selection menu
Press B to open the block selection menu. Your Selection is on the left, your inventory in the middle, and your Presets on the right. On small screens, Selection and Presets become two tabs next to the inventory.
2. Select your blocks
Click a block in your inventory to add it to the selection. Click it again to remove it. Selected blocks are outlined in green.
3. Set custom probabilities (optional)
Blocks start with an equal chance. To change a block's chance, Shift+click it in your inventory, or click its row in the Selection panel. Type a percentage and press Enter.
The other blocks share the remaining percentage and keep their proportions. For example, with Stone, Andesite and Gravel at 33% each, setting Stone to 50% gives 25% to Andesite and 25% to Gravel. A value of 0 removes the block.
The Selection panel shows each block's chance of being placed.
Clear selection at the bottom of the panel removes every block from the selection. Your presets are not affected.
4. Enable Random Placement
Click the Placement: ON/OFF button at the top of the menu, or press J at any time.
Close the menu and place blocks as usual!
Presets
The Presets panel lets you save and reuse selections:
- Create: type a name and click Create to save the current selection as a new preset.
- Load: click a preset to select it, then click Load (or double-click it) to replace the current selection with it.
- Overwrite with selection: replaces the blocks of the selected preset with the current selection.
- Delete: deletes the selected preset.
Overwrite and Delete ask you to click a second time to confirm. Hover a preset to preview its blocks.
The top of the panel shows which preset is loaded, and marks it as (modified) when the selection has changed since.
Settings
Open the settings with the ⚙ button at the top of the menu.
| Setting | Options |
|---|---|
| Save changes | On close (default): your selection is saved automatically when you close the menu (with Done, Esc or B). Manually: the menu shows Cancel and Apply buttons, and closing it without applying discards your changes. |
| Missing blocks | Continue (default): when a selected block runs out, placement goes on with the blocks you still have, and you are warned once. It turns off only when none are left. Continue (quiet): same, without the warning. Turn off: placement stops as soon as one block is missing. |
| HUD position | Where the "Random placement" indicator is shown: top center, top left, top right, above the hotbar, or hidden. It also shows the loaded preset's name. |
Keybinds
| Key | Action |
|---|---|
| B | Open / close the configuration menu |
| J | Enable / Disable random placement |
Feedback
Suggestions and feature requests are always welcome!
If you have an idea to improve the mod, feel free to open an issue or leave a comment. I'll be happy to implement new features whenever possible.
How to Install OC Random Block Placement (Mod)
OC Random Block Placement by OverCapi is verified for Fabric across Minecraft versions 1.21.11, 26.2, 26.3 (latest release: 0.4.0+26.3, file size: 178 KB). Follow the steps below to install it safely from ModCraft.tv:
- Click the Download button above and select your Minecraft version (1.21.11, 26.2, 26.3) and platform (Fabric).
- Make sure you have the compatible loader or environment installed for Fabric.
- Move the downloaded OC Random Block Placement file into your Minecraft
.minecraft/modsfolder and launch the game.
All Versions
+ Add Version
### Added
- Quick preset wheel**: hold
Rto open a radial wheel with 9 preset slots. Point at a slice and release to load that preset and turn placement on. Right-click a slice to assign a preset to it. Assignments are saved in the config. - Preset sharing**: send a preset or the current selection to chosen online players with
/msg, or post it in public chat. Players who have the mod get an[Import]button in chat. - Clipboard sharing**: copy a preset as a code, then import it from the Presets tab with "Import from clipboard".
## ✨ Completely redesigned menu
- New three-column layout: your **Selection** on the left, your inventory in the middle, your **Presets** on the right.
- The menu now adapts to your window size and GUI scale. On small screens, Selection and Presets become tabs.
- Clear text buttons with tooltips replace the old icon buttons.
- Hover a slot to see the block's name and its chance.
- New **Placement: ON/OFF** button directly in the menu.
- Press **B** again to close the menu.
## 🎲 Percentages instead of weights
- Set each block's chance directly in **%** (Shift+click a block, or click its row in the Selection panel).
- The other blocks share the rest and keep their proportions: setting Stone to 50% out of three blocks at 33% gives 25% to each of the others.
- Newly added blocks get an equal share.
## 📚 Better presets
- Select a preset, then **Load**, **Overwrite with selection** or **Delete** it. Destructive actions ask for confirmation.
- Double-click a preset to load it. Hover it to preview its blocks.
- Shows which preset is loaded, and marks it **(modified)** when your selection has changed.
- Clear selection** no longer looks like it deletes a preset, and can no longer wipe one by accident.
## ⚙️ New settings menu
Open it with the ⚙ button:
- Save changes**: automatically when closing the menu (default), or manually with Apply/Cancel.
- Missing blocks**: when a selected block runs out, keep placing with the others (default), do the same without a warning, or turn placement off.
- HUD position**: top center, top left, top right, above the hotbar, or hidden.
## 🖥️ Improved HUD
- Shows "Random placement" and the name of the loaded preset (with "(modified)" when it differs).
## 🐛 Fixes
- Resizing the window no longer discards unsaved changes in the menu.
- Closing the menu with Esc no longer loses your changes (in the default save mode).
- Running out of one block no longer turns placement off for the whole selection (it can still be configured to).
> Existing configs and presets are kept.
This update introduces **Preset Selection**!
You can now create and save custom presets using your favorite blocks and weights. Give each preset a name and easily switch between them whenever you want.
You can also **modify or delete your presets** at any time.
This update also comes with a **brand-new GUI**, making the mod more pleasant to use.
If you encounter any bugs or issues, please report them on the **project repository**. Your feedback is greatly appreciated!
- Fixed a Minecraft client crash when opening the keybind menu.
ℹ️ Note: The file name incorrectly shows
1.0.0. The actual mod version is 0.1.0. This does not affect the functionality of the mod.
