Challenge

Challenge mode is a new feature which will be included in Sizzle Season 2023. Officially a replacement for League Battle from, Challenges are focused around special modes with unique in-match conditions. They can be played solo or with a team, and feature a two-hour ranked play window similar to League Battle, but unlike League Battle's constant rotations, the windows only occur at a few specific times during a season.

Previewed
Three types of Challenges with unique conditions were revealed as part of the Sizzle Season 2023 announcement: "Too Many Trizookas!", "Foggy Notion", and "Extreme Jump Battle".

The @SplatoonJP Twitter account also confirmed that the monthly event battles (ツキイチ・イベントマッチ in Japanese} that appeared in 's League Battle mode will return as Challenges.