I'm following the example used in the WWDC video talking about how to get your game to authenticate to the GameCenter servers using the Unity Plugins they have provided. I followed the steps to get the packages imported properly but I am having an issue getting their example got to work. This is the example code: using Apple.GameKit; public class MyGameManager : MonoBehaviour { private GKLocalPlayer _localPlayer; private async Task Start() { try { _localPlayer = await GKLocalPlayer.Authenticate(); } catch (Exception exception) { //Handle exception... } } } My code is: using System.Collections; using System.Collections.Generic; using UnityEngine; using Apple.GameKit; public class GameManager : MonoBehaviour { private GKLocalPlayer _localPlayer; private async Task Start() { try { _localPlayer = await GKLocalPlayer.Authenticate(); } catch { return null; } return null; } } And I get "The type or namespace name 'Task' could not be found (are you missing a using directive or an assembly reference?)" with my code. I haven't delt too much with async and await previously so please let me know if there is something I am missing with this.