---
title: fallbackURL
framework: gamekit
role: symbol
role_heading: Instance Property
path: gamekit/gkgameactivitydefinition/fallbackurl
---

# fallbackURL

A fallback URL that can be used to construct a game-specific URL for players to share or join, if the joining device does not support the default URL.

## Declaration

```swift
var fallbackURL: URL? { get }
```

## Mentioned in

Creating activities for your game