Mario and Luigi: Paper Jam is an unreleased game for the 3DS. Its prequels are Superstar Saga, Partners in Time, Bowser's Inside Story, and Dream Team. It is called Mario and Luigi RPG: Paper Mario MIX in Japan and Mario and Luigi: Paper Jam Bros. in Europe and Australia. It is going to be released in the spring of 2016. The playable characters are Mario, Luigi, and Paper Mario. In it, Luigi accidentally knocks over a book with Paper Mario characters, and they come into the Mushroom Kingdom. It is a combination of the Paper Mario and Mario and Luigi series.