On this page of the Battlefield 2042 guide, you will find information about the Portal mode, which is one of the gameplay options available in the game. Here, you'll find out from what the rules of this mode are.
The Portal gives you a lot of freedom in the way you play. It allows you to create your own rules of the match. A special website has been prepared for this.
However, if you do not plan to create own custom games, you can use the works of others. To join the game in Portal mode, click on the dedicated tab in the main menu. There you will see four highlited servers which you can join. Of course, these are not all of them, and you can always check the server browser -just click on the "browse" tab.
There, you can choose from the list of active servers. Next to each of them, you will find information about the mode, the number of players, and ping. Each of them will have different rules so everyone can find something for themselves.
Among the modes that appear on the servers list, you can find, for example, the Gun Master, in which you use a specific weapon, and you need to kill someone with it to get another firearm. The other example is Zombie, where an armed group of players tries to defend themselves against a horde of opponents deprived of the weapon.