Skip to content
Hidden Star: Boo in a Box
Super Mario 3D All-Stars

Hidden Star: Boo in a Box

Find the Hidden Star 'Boo in a Box' in Super Mario Galaxy! This guide walks you through Deep Dark Galaxy, from swimming to the lake bottom to defeating the Boo.

By ··10 min read·Multi-source verified
1 reading this guide  

Find the Hidden Star 'Boo in a Box' in Super Mario Galaxy! This guide walks you through Deep Dark Galaxy, from swimming to the lake bottom to defeating the Boo.

Alright, let's grab that tricky 'Boo in a Box' hidden star in Deep Dark Galaxy! This one's found within the Bubble Blastoff mission, so we'll need to dive deep... literally.

Walkthrough
  1. 1
    First things first, you'll want to swim straight to the bottom of the lake. Don't worry about the Undergrunt Gunners; just head straight through the tunnel and into the lake.
  2. 2
    Once you're at the bottom, grab a green shell. You'll see a shipwreck surrounded by spiky underwater mines. Use the green shell to shoot at the shipwreck. The explosion from the shell hitting the wreck will detonate the mines and reveal a Star Launcher.
  3. 3
    Hop into the Star Launcher! It'll shoot you up into the sky, right towards a purple and gold box.
  4. 4
    When you land inside the box, you'll meet a Boo and an Urchin. The Boo's got the Power Star we need, but we have to trigger a spotlight to defeat him. Look at the back wall. You'll see some spinning poles. Use them to jump up to a gravity arrow.
  5. 5
    Spin the gravity arrow so that gravity is now pulling towards the left wall.
  6. 6
    Once you're on the left wall, ground pound the spring. This will launch you up to spin the gravity arrow again. Keep an eye on the Boo and Urchin as you move around; they'll try to get you!
  7. 7
    Now, head back to the back wall. Use the spring to jump towards the gravity switch. Try to time your jump so you land in a bubble.
  8. 8
    While you're in the bubble and near the gravity arrow, spin to flip the gravity arrow.
  9. 9
    On the right wall, you'll need to spin attack a crystal. This will reveal a spotlight.
  10. 10
    Now for the fun part: lead the Boo into the spotlight! Spin around to get his attention and lure him into the light.
  11. 11
    With the Boo defeated, use the spring jump to flip the gravity arrow back to its default position. This will let you grab the Power Star!
Tips
  • Don't waste time fighting the Undergrunt Gunners; just swim past them.
  • Timing your jump into the bubble is key to reaching the gravity switch easily.
  • Keep moving to avoid the Boo and Urchin while you're manipulating gravity.

You'll earn the 'Boo in a Box' Power Star!

100% Human-Written. AI Fact-Checked. Community Verified. Learn how AntMag verifies content