Mario & Luigi: Double Dimensions

Mario & Luigi: Double Dimensions (also known as Mario & Luigi RPG 5: Paper Mario Splash in Japan and North Korea) is a title for the Nintendo 3DS, developed by AlphaDream in collaboration with Intelligent Systems. The plot of the game revolves around Mario and Luigi teaming up with their Paper- cutouts in order to prevent an evil tribe of aliens called the Comsluns from taking over the Mushroom Kingdom. It is the fifth title in the Mario & Luigi series and the Paper Mario series. AlphaDream and Intelligent Systems had started development in late 2014 and the E3 trailer was shown in 2015, and the game released in Spring 2016.

Story
In the opening, dark objects are fired at the earth from the very far space, these objects seem to be Fire Flower like objects. Those things are called the Comsluns, they're are a tribe of aliens that have disappeared in space a very long time ago. The leader of these mysterious aliens is the evil unpredictable Comslunitior. He is sending all of his minions to attack many kingdoms and take dominate them. His first target is the Mushroom Galaxy. We then see a small shinny book floating in Space, it gets shot by a cannon and falls to the Mushroom Galaxy.

Meanwhile in the Mushroom Kingdom, Mario, Luigi and Toadbert are looking for decorations in the attic for a party in Peach's Castle. They soon find a hole above a bookcase and Luigi investigates. Suddenly, Toadbert gets chased by a Scardey Rat, which entered the room through the hole, and leads it to Luigi, who starts to fight it. Suddenly being braver than usual. Winning the battle the Scardey Rat explodes and the bros celebrate the victory. But they are interrupted by a loud noise outside the castle. Mario looks outside and sees the same shinny book from the opening cutscene. It opens up and then tons of Paper cut-outs shoot from the book.

Meanwhile at Bowser's Castle, Bowser meets Paper Bowser, who, after some disagreements, team up together and agree to kidnap Peach and Paper Peach. Bowser Jr. also meets his paper counterpart, Paper Bowser Jr. and, unlike their fathers, the two become friends. Additionally, Kamek, Paper Kamek and Paper Kammy Koopa meet and shortly begin to insult each other, which continues throughout the game.

Back at Peach's Castle, we see Peach and Toadsworth having a conversation with Paper Luigi, who they think is the real Luigi. Mario, Luigi and Toadbert show up, and Paper Luigi freaks out when he sees Luigi, they do a little bit of a mirror dance to see if they're each other, which the other characters applaud to. Paper Peach then walks in and introduces herself to the others.