A custom room is a feature that allows the PUBG mobile player to create a room and invite others to play in it limited by the parameter he chooses. The room allows for a maximum of 100 players to enter it using the room number and password. The room is created using a tool that can be bought using UC or received with a royal pass. In addition, there are many types and variations to the creation tool in a matter of validity time. Some have a validity of a day some of more than that. Collecting the cards can be used to increase the validity of a certain room.