[2023] Create a Battle Mode * Can this be possible?

This already exists in Training Rooms. You can create a Training Room and wait for other players to join if that's something you would like to do. It's more likely that you will be able to fill the rooms and play games if you advertise about your intended mode or make it a clan/group related activity.

As for specifics, Training Rooms already allow:

Choice of Map


Choice of Type (Domination/Standard Battle/etc...)


Class Restrictions (if desired)


Player Count

The leader of the room could elect to remove any players that are not picking ships of the correct Tier or who are choosing not to play the chosen format.

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It is rather unlikely to expect constant pick-up games by making Training Rooms, but please remember that the largest Tournaments in WoWs like King of the Seas are entirely handled through use of Training Rooms. Players can scrim under set conditions or come up with fun ideas for play like racing or torpedo jousting or secondary-only silliness.

If you'd like to make a community-interest day or period of time for people to play special modes or types of games, you should advertise the format and time and see how much interest there is!

No, rewards are only offered for official game modes like Random Battles, Co-Op Battles, Ranked, Brawls, Clan Battles, Operations, and other patch supported content like Airship Escort.

Training Rooms may not offer directly in-game rewards for participation, but they do allow for people to play the game in a format of their choosing for fun.