# Uuid.isNil

Checks if the uuid is nil {00000000-0000-0000-0000-000000000000}

**Kind:** Function

**Environments:** Game, Terrain

## Game

``` { .lua .api-signature }
uuid:isNil(  )
```

[Open the full Game reference](../Game-Script-Environment/Userdata/Uuid.md#isnil)

**Returns:**

| Type | Description |
| --- | --- |
| boolean | True if the uuid is nil. |

## Terrain

``` { .lua .api-signature }
uuid:isNil(  )
```

[Open the full Terrain reference](../Terrain-Script-Environment/Userdata/Uuid.md#isnil)

**Returns:**

| Type | Description |
| --- | --- |
| boolean | True if the uuid is nil. |