Paper Mario: Sticker Star 2 is a Wii U Paper Mario RPG. It will be released on December 5, 2014 in Japan, January 18th, 2015 in North America, & Spring 2015 in Europe & Austrailia. It is the 10th Mario RPG, the 5th Paper Mario game, and the Sequel to Paper Mario: Sticker Star for Nintendo 3DS.
Plot WARNING:SPOILERS!READ AT YOUR OWN RISK!
The Sticker Fest happened again & Mario,Luigi,Princess Peach,Blue Toad,& Rosalina were enjoying it.Kersti & her family,Stickino,Stickina,& Kerstu were hosting it.But then,Bowser,Bowser Jr. & the Koopalings show up & touch the Sticker Comet yet again,kidnapping Stickino,Stickina,& Kerstu in the process.Kersti is again angry,but this time,she doesn't accuse Mario of touching the Comet like she did before.Mario,Luigi,Princess Peach,Blue Toad,& Rosalina decide to help Kersti rescue her family from Bowser.Kersti gratefully agrees.
Rest coming soon
As mentioned above,this game plays very similar to Paper Mario:Sticker Star,as it's a sequel.Every sticker from that game returns.In multiplayer,the sticker album is shared.
The game includes 5-player multiplayer (a first for a Paper Mario game),allowing the player to play as Mario,Luigi,Princess Peach,Blue Toad,& Rosalina,each with unique advantages & disadvantages,much like Super Mario 3D World.