GroupActivities and SharePlay

Use GroupActivities for sessions shared through FaceTime, Messages, AirDrop, or nearby visionOS participation. SharePlay owns invitation, activation, session lifecycle, participants, messaging, journals, and media-coordination handoffs.

Route Game Center authentication/matchmaking to gamekit, tabletop seats and authoritative board state to tabletopkit, and playback UI to avkit.

Contents

• Choose the workflow
• Setup and activity contract
• Session lifecycle
• Choose a transport
• Activation and UI
• Common mistakes
• Review checklist
• References