I’m testing Game Activities in my Unity project with the new Apple.GameKit 2025-beta1 plugin. When I go into Xcode- Debug → GameKit → Manage Game Progress → Leaderboards → and click the generated link:
If my app is already running in the background, the link opens the app and my handler (Apple.GameKit.GKGameActivity.WantsToPlay += OnWantsToPlay;) fires as expected. I can read the activity and route the player to the right level.
If the app is completely closed, clicking the same link launches the app, but my OnWantsToPlay listener is never invoked. The app just boots normally and the activity intent seems lost.
I’ve tried to subscribe as early as possible (in Awake() of my bootstrap scene, also tested with RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.BeforeSplashScreen)]). Nothing works. Also, “Get Started with Game Center” video only demonstrates activation when the app already running, not a cold start from a Game Activity link. What am I missing?
Environment Device/OS: iPhone on iOS 26.0 beta (Game Center sandbox) Xcode: 26.0 beta 6 Unity: 2022.3.21 Apple GameKit Unity plugin: 2025-beta1 (GameKit package) Signing: Game Center capability enabled; using development provisioning profile GameKit resources: GameCenterResources.gamekit in project (Target: Unity-iPhone), appears under Build Phases → Copy Bundle Resources