Private Battle

Private Battle is a mode made available in the August Update on August 6th. Private Battle allows groups of 2-8 friends to play together in customized matches, where the host selects the mode and stage. Such battles will gain players no points and players' ranks will not be affected.

Private Battles can have any number of players from two to eight. The host can create even battles (such as 1v1 or 4v4) or uneven battles (such as 1v4 or 3v2). However, there can only be up to 4 players per team, and the host cannot assign everyone to the same team. Lobbies created with Private Battle can only be joined by the host's Wii U friends and their Wii U friends. The host can set a 4-digit password for the lobby, so that uninvited friends cannot join.

The host of a Private Battle chooses the stage and mode that will be used. There is also a random stage option. All stages and modes are available, and DLC stages/modes are added as soon as they are released. Like with Squad Battles, players can change their equipped weapon and gear in-between matches without having to leave the lobby and teammates' weapon selections are shown.

It is possible to create a private match using 8 Wii U consoles connected via a single router that is connected to the Internet.

Trivia

 * During Splatfest, the only options in the Battle Lobby mode selection screen are Splatfest Battle and Private Battle.
 * Private Battles are not interrupted by Inkopolis News, unlike other battles. However, if a player disconnects from a Private Battle, the latest missed news announcement will appear.
 * If the host of a Private Battle is having a Splatfest, the Ink color set for each match will be the host's Splatfest color set.
 * If the player scrolls over certain keys in the password selection screen, a simplified version of the Squid Sisters' song from the final battle of Octo Valley can be played.
 * In both the Japanese and English versions of Splatoon, the two teams in a Private Battle are called "Alpha Team" and "Bravo Team".
 * The stage selection for Private Battles appears to somewhat follow the order in which stages were added into the game, but contains inaccuracies:
 * Camp Triggerfish is listed as sixth when it is actually tenth (causing Port Mackerel through Moray Towers to be pushed forward).
 * Moray Towers and Bluefin Depot are swapped.
 * Hammerhead Bridge and Flounder Heights are swapped.
 * Piranha Pit and Mahi-Mahi Resort are swapped.