There are a total of 120 Power Stars to find in Super Mario Galaxy. You’ll find most of them by just completing each of the game’s levels, but there are also 51 hidden stars to collect throughout.
In this Super Mario Galaxy guide, we’ll tell you the location of the 3 Luigi Power Stars.
Luigi Power Stars
Once you (spoiler) rescue Luigi during Kitchen Dome // Ghostly Galaxy // Luigi and the Haunted Mansion, he’ll head off on his own to find some Power Stars. He, being Luigi, gets stuck every time he wanders off. He’ll mail you a photo, and you’ll have to go off to find him. There are three places he’ll go.
Terrace Dome // Good Egg Galaxy
Dino Piranha – Luigi on the Roof
The first place you’ll find Luigi trapped is back on the very first planet of the first galaxy. Head into any of the Good Egg Galaxy levels. As soon as you land, there will be a small house ahead of you. Use the orange pipe on the underside of the planet to get inside. Work your way to the top of the interior to find another orange pipe (you can also pick up a 1-Up Mushroom along the way). This one will lead you to the roof where you can rescue Luigi.
Fountain Dome // Battlerock Galaxy
Breaking into the Battlerock – Luigi under the Saucer
All the way at the end of this level, you would normally kite a Bullet Bill to a dome containing the Power Star. To find Luigi, you’ll need to kite a Bullet Bill around to the underside of the saucer.
Once Luigi is rescued, he’ll give you a Green Power Star (more on these below).
Terrace Dome // Honeyhive Galaxy
Bee Mario Takes Flight – Luigi in the Honeyhive Kingdom
Start the first mission of the Honeyhive Galaxy normally. Head up the hill to collect the oversized coin, and then drop down to the base of the waterfall to collect the Bee Mushroom. From there, head back to the very beginning of the level (by the 1-Up Mushroom).
Fly up the hill that’s on your left when you start. Run around to the left side of the tree, and walk up the narrow wall/ramp. At the top, jump and fly your way to the right.
Luigi is clinging to the tall tree right next to you on the cliff.