Living Room is a new stage that is exclusive to the 3DS version of the game, and comes from the Nintendogs franchise of games. The stage starts out as a flat living room, until blocks and other things start to fall. These falling objects can cause damage to characters should they hit them, but they fall and become a formation, which the characters can use for battle.
There isn't one set formation for these blocks and objects, though, although it's not known how many there are. In the background of the stage will be Nintendogs playing, as well as even Nintencats. There will always be one Nintendog playing, and at least five different breeds are said to appear.
