To unlock Mario, you’ll need to have eight stars. Jump into the Mario portrait in the room connected to the minigame room as Yoshi, then battle the Goomboss in the level you’re transported to. Once you defeat him, you’ll get the Mario key.

Note that you’ll need to collect the first star in Big Boo’s Haunt before you can get Luigi. The stairway to the second floor of the mansion (where the entrance to Luigi’s level is located) only appears from the second star onward.

In the Nintendo 64 version, getting up here proved quite challenging — many first-timers weren’t aware of this door at first and had trouble getting to it once they found it. However, in the DS version, the balloon block makes this much, much easier.

Note that there are eight red coins scattered throughout the maze. Though they’re not required, finding all eight will win you a star.

From your starting position, enter the door on the right side of the room. In the next room, carefully run past the eyeball and go through the door on the left side of the room. In this room, get the “?” block if you wish to collect the coins on the ceiling, then head through the door on the right. Use the platforms to make it to the door on the left side of the room. Finally, run across the collapsing bridge and use the platforms to scale the wall. Head down the chimney at the top.

During the fight, Big Boo will switch back and forth between the reflection in the mirror (where Luigi is) and “real life” (where Mario is). When he’s in the mirror, attack him with Luigi, and vice versa. Use the same strategy as you use for other Boos — kicks and ground pounds should blow him away when you’re behind him. If you look at him, he’ll hide his face. Watch out for his fireballs!

If you’ve played the original Super Mario 64, the door you want is the one that led to the Princess’s Secret Slide in the original game.

Being able to run on water for several seconds Being able to do a spinning fall after a backflip (which deals damage) Being able to Scuttle Jump, which is similar to Yoshi’s Flutter Jump, to reach further distances, but not as high Being able to long jump the farthest Being tied with Mario on the triple jump height Being a slightly faster runner than Mario, except on an extra star speed run Being tied with Mario in power, but moves a little slower when carrying objects Being the fastest swimmer in the game Being able to turn invisible and pass through certain substances when he collects his power flower