---
title: "init(definition:)"
framework: gamekit
role: symbol
role_heading: Initializer
path: "gamekit/gkgameactivity/init(definition:)"
---

# init(definition:)

Creates a game activity with definition.

## Declaration

```swift
init(definition activityDefinition: GKGameActivityDefinition)
```

## See Also

### Creating an activity

- [start(definition:)](gamekit/gkgameactivity/start(definition:).md)
- [start(definition:partyCode:)](gamekit/gkgameactivity/start(definition:partycode:).md)