The Splatoon Anniversary Invitational was a joint initiative of major Splatoon tournament organizers, led by Squidboards and broadcast by EndGameTV on May 28, 2016. The 16-team, double-elimination tournament celebrated the first anniversary of the game's release. Teams qualified for the SAI on a point system from four tournaments, one each from the largest Splatoon tournament providers, on the preceding two weekends: SCL 16, Messtival! 5, Supernova II, and Cloudburst (EGtv).
As EGtv broadcast the SAI, the SAI stream graphics were modified versions of the EGtv graphics package that had already been instituted, with minor changes to the color and type.