Ms. Grunkle's house is a tall narrow building on a platform above the ground, with a set of steps leading up to the front door. The top of the building is shaped similarly to a witch's hat, with several points extruding from the building around it. There are two yellow circular windows on the front of the roof, and four additional windows going around the house roof. The front wall is purple, and the entrance is a red door bordered with ghost designs.
There are five rooms in the interior of the house. The first room is the foyer, which contains a large portrait of Ms. Grunkle, a hanging candelabra, and a set of long stairs leading up to the second floor. The second room is the bedroom. The third room is the bathroom. The fourth room is the living room. The fifth room is the attic, which resembles a classroom, with a blackboard, books, and papers.
In the Game
Ms. Grunkle's house is located on one end of the Haunted Island opposite Madame Pomreeda's Cart. Each of the five doors in Ms. Grunkle's house has five locks on it at the beginning of the game. The player must collect 25 keys by completing activities around the island in order to unlock all of the doors and reach the attic to rescue the The Kids who are being held captive inside. Each time the player unlocks a door, they must confront Ms. Grunkle, and she'll cast them into the Labyrinth.
The final cutscene of the game plays when the player unlocks the last door. The player confronts Ms. Grunkle, who is forced to flee, and the kids are saved.
After the player has completed the goal of defeating Ms. Grunkle and rescuing the kids, if they choose to keep exploring the Haunted Island, they will no longer be able to enter Ms. Grunkle's house. Flap will express surprise at the player returning to Ms. Grunkle's house and advise them to play more activities on the island instead.