Big Run

Big Run is a special event in Splatoon 3. First announced in the Splatoon 3 Nintendo Direct, Big Runs allow players to partake in Salmon Run Next Wave with Salmonids invading Greater Inkopolis, in which Stages become valid Salmon Run stages.

Description
In the initial announcement, footage of a Big Run shift at Wahoo World was shown, with less elevated sections of the map flooded. When it is Big Run, the sky color changes to red. This event was said to occur every few months.