# Biome

On this page you will learn how to create a custom biome and place it into your world configuration

### Step 1 - Create the biome file

To create the biome file, use the command /oconfig create biome \<name>.\
This will create a new yml file into the /plugins/Ouranos/biomes/ folder.

### Step 2 - Tune the configuration file

Change every value you want into the config before going to the next step.

The process to create trees for the biome is explained into [tree](https://alex-plugins.gitbook.io/ouranos/customization/tree "mention") section.

### Step 3 - Add into the world configuration file

Go into your world configuration file (could be /plugins/Ouranos/world/default.yml or the specific world configuration, see [world-configuration](https://alex-plugins.gitbook.io/ouranos/world-configuration "mention")). Then into the biomes property list, add this line :&#x20;

```yaml
- Custom:<name>
```

```
<name> is the property name into your custom biome file configuration and NOT the filename.
```

### Step 4 - Load your world

You can now create your world and the biome will appear in it.

{% hint style="warning" %}
Don't forget to run /oconfig reload before creating your world to let Ouranos update the configuration values
{% endhint %}

{% hint style="danger" %}
Ouranos biomes does not allow you to directly modify terrain height, biomes can only change the appearance of the world (decorations, trees, blocks)
{% endhint %}