The Splatfest theme is about two power-ups from the Super Mario Bros. series: the Super Mushroom, which grants super size, and the Super Star, which grants invincibility.
The Shifty Station for this Splatfest is unknown.
Merchandise
Splatfest T-shirts based on the artwork for the event were made available to purchase at the My Nintendo Store soon after the announcement. They are also available on Nintendo's online stores for South Korea and Hong Kong. Also, Splatfest keychains can be bought for 100 Platinum Points in North America, Europe, and Japan.[1]
Collectible medals
In Japan, the top 100 players of each team and 100 random others will receive a special prize: a Super Mario Bros. 35th anniversary medal.[2] In Europe, these will also be given to the top 100 players on each team.[3]
Trivia
This is the first Splatfest with an original theme since the event that was officially dubbed as the final one: Chaos vs. Order.