Mario is Missing! is a 1993 educational video game developed and published by The Software Toolworks for MS-DOS, the Nintendo Entertainment System (NES), and the Super Nintendo Entertainment System (SNES). A Macintosh version was released in 1994. The player controls Luigi, who must travel around the world to find and return stolen treasures as part of a quest to find his brother, Mario, who has been captured by Bowser. Mario is Missing!, part of a series of educational Mario games, marked Luigi’s first starring role in a video game, but would not occur again until 2001 when Luigi’s Mansion is released on the Nintendo GameCube.