# Overview {% embed url="" %} Elixir Overlay - Getting Started {% endembed %} ### Overview

The Elixir Overlay is a feature that allows developers to integrate features like NFT purchasing and friends chat seamlessly into their game. While the overlay is provided by Elixir Launcher in-game automatically without any additional setup requirements, to integrate all the features of the overlay in-game, some setup is required. ### Initialization & Disposal The overlay event buffer will be automatically initialized by the SDK upon a call to `PrepareElixir(apiKey)`. The event buffer will remain initialized until application shutdown. ### Integration Here is a minimal example:

using Elixir;
using Event = Elixir.Overlay.Event;

public class TestOverlayController : MonoBehaviour
{
	// ... we will assume that a method Log is implemented that prints
	// text on-screen.

	// To initialize simply initialize the SDK by calling PrepareElixir
	public void Init()
	{
		ElixirController.Instance.PrepareElixir("your api public key here");
		
		// after the SDK is initialized, you can assign to the delegates
		Event.OnCheckoutResult += HandleCheckoutResult;
		Event.OnOpenStateChange += HandleOpenStateChange;
	}
	
	private void HandleOpenStateChange(bool isOpen)
	{
		Log($"MOpenStateChange: {isOpen}");
	}

	private void HandleCheckoutResult(bool success, string sku)
	{
		Log($"MCheckoutResult: {success}");
	}

}