Now that you have learned most of the basics of Unreal Engine 4, let's see how to package your game. Before we package the game, we need to make sure that we set a default map for our game which will be loaded when your packaged game starts. You can set the Game Default Map option from the Project Settings window. For example, you can set the Game Default Map option to your main menu map:
To set a default map for the game, please follow these steps:
Click on the Edit menu.
Click on Project Settings.
Select Maps & Modes.
Choose your new map in Game Default Map.