Seriously, it's called Kersploosh!
Among all the established franchise announcements and the "Year of Luigi," a smaller announcement came in and went, almost unnoticed. A game by the name of Kersploosh! was announced during today's Nintendo Direct for the 3DS eShop.
Gameplay looks a lot like the indie title AaaaaAAaaaAAA!!! - A Reckless Disregard for Gravity, but instead of a dude falling down you control a ball of liquid (or a rock?) trying to make a splash at the bottom of a well, avoiding any and all obstacles in your way.
Kersploosh! will drop into the 3DS eShop on March 7 of this year.