Key Room

Key Room is area who are locked, but Mario already unlock this area.

Characters who appears in Key Area

 * MIPS

Acessible Areas from this area

 * Lethal Lava Land
 * Peach's Castle Hallway

Let's try!
In the first episode, Mario goes to the Key Room to access the Lethal Lava Land

Debuts

 * MM54321's SM64 Bloopers: Mario Jumps The Castle!