Monthly Challenge

The Monthly Challenge is a Challenge and the success or continuation of the monthly event battles that appeared in  League Battle mode, where the top three teams and the 100th-ranked teams are published on social media. Information about it was first available on 2023-06-06 at July 27, 2024 on SplatNet 3 after the conclusion of the first Too Many Trizookas! Challenge. It got its first announcement on Splatoon Japanese Twitter account, was first available on 2023-06-25 in Sizzle Season 2023, and was the fourth available Challenge.

Description
When the Challenge is played in Turf War, only primary gear abilities will be enabled, so secondary gear abilities will have no effect, while in any other mode, this rule does not apply.

In-game info
"How high can you get your Challenge Power this month? Only primary gear abilities will be enabled in Orange S2 battles. Secondary gear abilities will have no effect! There will be no limits on gear abilities in Orange S2!"

Quotes
"SRL Challenge Team back again, letting you know that a tough Monthly Challenge is coming up! The first play window is from 9 PM to 11 PM PT on 6/24. Next, early birds can get in on the action from 5 AM to 7 AM PT on 6/25, and again from 1 PM to 3 PM PT the same day. Good luck!

After the conclusion of the next Monthly Challenge, we'll be announcing the top three teams along with the winner of the Average Roe award! Just compete in the 1 PM to 3 PM PT time slot on 6/25 to be eligible. And, you know, finish in the top three!"

- @SplatoonNA on Twitter