Custom matchmaking in Fortnite Battle Royale allows you to play with a specific group of people through an invite process. Right now the feature is currently being tested, but we've compiled everything we know about this upcoming feature. Custom matchmaking is an upcoming feature that allows players to set up private matches where only players with an invite can join. The player who sets up a custom match will be given a key that can then be used to enter the match. Only players with the same key can play in the match. This is great for streamers and large groups to ensure everyone plays together.