While trying to close the doors, the player must avoid certain hazards. Mario will lose a life if he touches an enemy, runs out of time, runs off the edge of the floor he is on, or if all the doors are open. Enemies in the game are mostly regular "Mario" series creatures, such as Goombas, Koopas, Boos, and their variations. The opponent on the last level of each hotel is one of the Koopalings, who use different methods to try to kill Mario.