Earlier this week during the Nintendo Direct, it was revealed that Splatoon will also have a single-player focused portion of the game. Previously we assumed the game would be entirely multiplayer, as when the game was revealed at E3 that’s the only portion that was shown off. The official Splatoon Japanese Twitter account has given some hints as to the plot for the single player game in one of its tweets

Nintendo has recently restored Wii U Mario Kart 8 and Splatoon online after five months of being offline.

Game Rant Writes "Mar10 Day is a fun yearly celebration of the Super Mario series, and Splatoon may warrant a fan-designated day of celebration in its own right."

How, exactly, did Splatoon reach heights rivalled only by Pokémon in Japan? New IPs from the House of Mario appear as often as shiny Pocket Monsters, yet typically move comparatively mediocre numbers or fall into relative obscurity behind the premium marques of Mario, Animal Crossing, Zelda, and Pokémon. Take Pikmin and ARMS, for example, which we adore but struggle to compete with the tentpole franchises when it comes to sales numbers or mainstream mindshare.
So, again, how has Splatoon risen to become one of Nintendo's most important series in Japan?
well that changes everything, they acted like is was a multiplayer only back at e3.
Hope it is a decent length. It looks so creative in level progression I want it to last at least a couple of hours.
I'm just in love with that paint shader.
I just love the bizarreness of this game.
The level design reminds me of Super Mario 64