Luigi's Mansion 3 is a 2019 adventure game developed by Next Level Games for the Nintendo Switch. The story begins when Luigi and his companions accept an invitation to a grand hotel, only for the getaway to turn sinister when King Boo exposes the trip as a trap and captures Mario and the others. Armed with ghost-hunting equipment and backed by the recurring inventor Professor E. Gadd, the famously timid Luigi must work his way through the hotel's many floors to rescue his friends. Each floor presents distinct environments and challenges as players navigate the increasingly threatening building. The game builds on the ghost-capturing mechanics central to the series while expanding the scope with a large, vertically structured setting that sends Luigi across a wide variety of themed areas throughout his reluctant but determined rescue mission.