Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey is an enhanced remake of the 2009 Nintendo DS game, Mario & Luigi: Bowser's Inside Story that was released in Japan on December 28, 2018 and in North America on January 11, 2019 on the Nintendo 3DS. The game was announced in the Nintendo Direct that occurred on March 8, 2018. Similar Mario & Luigi: Superstar Saga + Bowser's Minions, this game features another story named Bowser's Jr.'s Journey, where Bowser Jr. takes action in this story.
Not much is actually known of the upcoming game, as a few enhanced gameplay scenes from the original game are seen.
- When this game gets released, the original Mario & Luigi: Bowser's Inside Story will turn almost 10 years old.