Mario is Missing! is an educational game and the first game where Luigi is the main protagonist with Mario in a supporting role. The main gameplay consists of moving around a city in side-scrolling manner while jumping on Koopas to collect stolen artifacts. Luigi then must secure the city by taking these artifacts to their respective locations and correctly answering two questions about the landmark.The computer version is a point-and-click adventure game, while the NES and SNES versions have more of an emphasis on platforming.