Mario & Luigi: Paper Jam is an upcoming crossover game between the Mario and Luigi series and the Paper Mario Series.
- Paper Mario
- Princess Peach
- Petey Pirahna
- This is the first (and, so far, only) Mario game in the entire series to be a crossover of two series within the Mario series itself.
- This game is considered a combination of Mario and Luigi:DreamTeam and Paper Mario:Sticker Star
- This game marks numerous of things:
- This is fifth Mario & Luigi and Paper Mario game.
- This is second Mario & Luigi game for the Nintendo 3DS and the second Paper Mario game for the system as well.
- This is the second Mario & Luigi where two Bowser's from different times/dimensions appear in the same game. The first was Mario and Luigi:Partners In Time where Bowser encountered his younger self.
- This is the second time in a Mario & Luigi game where three characters are playable (with Mario, Luigi, and Paper Mario). The first was in Mario & Luigi: Bowser's Inside Story (with Mario, Luigi, and Bowser).
- This is the only game in E3 that would come in a later year.