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[Home](./index.md) &gt; [bitburner](./bitburner.md) &gt; [Singularity](./bitburner.singularity.md) &gt; [joinFaction](./bitburner.singularity.joinfaction.md)

## Singularity.joinFaction() method

If you are not in BitNode-4, then you must have Level 2 of Source-File 4 in order to use this function and the RAM cost is doubled.

This function will automatically accept an invitation from a faction and join it.

<b>Signature:</b>

```typescript
joinFaction(faction: FactionName): boolean;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  faction | [FactionName](./bitburner.factionname.md) | Name of faction to join. |

<b>Returns:</b>

boolean

True if player joined the faction, and false otherwise.

## Remarks

Singularity - Level 2