# WorldClass.server_onUnload

Called when the [World](../Game-Script-Environment/Userdata/World.md) is unloaded from the game on shutdown.

**Kind:** Callback

**Environments:** Game

## Game

**Callback side:** Server

``` { .lua .api-signature }
WorldClass:server_onUnload(  )
```

[Open the full Game reference](../Game-Script-Environment/Classes/WorldClass.md#server_onunload)

**Parameters:**

| Name | Type | Description |
| --- | --- | --- |
| `self` | table | The class instance. |