Here is an overview of the game, via the Nintendo eShop:
A 2D action puzzle game where you switch between two characters while clearing trap-filled stages.
Marisa and Alice visit the Grand Library at the Scarlet Devil Mansion to borrow a book. But what awaited them there was a trap tower prepared by Patchouli and Nitori.
Two-player multiplayer is also supported, so enjoy playing with a friend as well.
Watch a new trailer below.