The original title for Mario and Luigi: Brothership had to be changed due to the release of Super Mario Bros. Wonder. Akira Otani revealed that the game was originally planned to be called ...

Wonder came out first ... like ‘friendship.’” Past Mario & Luigi games have had different names in the U.S. and Europe compared to Japan. The first game in the series was titled Mario ...

"Actually, I wanted to add “Wonder” to the name at first. Like “Mario & Luigi Wonder”. But while we were making it, Super Mario Bros. Wonder came out first, so we couldn’t use that (laughs).