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Super Mario 3D All-Stars

Galaxy Overview

Ben Chard
Jarrod Garripoli
, &
Seren Morgan-Roberts


This page provides an overview of Ghostly Galaxy. This galaxy is found in the Kitchen dome and needs 20 stars to unlock it.

Whenever you do a different star, the galaxy will alter or new planets will be available. Each star challenge will have its own section with a guide on all of the enemies in that level.

Luigi and the Haunted Mansion

This level is set in the Haunted Mansion. The goal is to save Luigi!

Boo Mario

The Boo Mario form is available in the Luigi and the Haunted Mansion level. Boo Mario can fly by pressing A/B and can also go invisible and float through walls by pressing Y or by shaking the Right Joy-con. If you go into a spotlight you will transform back into normal Mario.

Boo Mario can go invisible and travel through walls!


  • Goombas - Goombas will simply run at you and try to damage you by touching Mario. To defeat them, spin attack them then run at them to kick them away, or just jump on their head.

  • Pumpkinhead Goombas - Pumpkinhead Goombas are essentially Goombas with armor. You can spin attack off its pumpkin armor and then defeat it like a regular Goomba. You can also just groundpound the Pumpkinhead Goomba to defeat it with one move.

  • Boos - The Boos will move towards you when you aren’t facing them. You can’t spin attack or jump on them to defeat them - and if you try, you’ll get damaged. You’ll need to spin the Boos into a spotlight to get rid of them once and for all.

To defeat Boos, you need to swing them into a spotlight.

  • Chain Chomps - The chomps occupy two planets in this level. They will run around in the same path and try to bite you if you’re in their way. You can only defeat them if you use the Rainbow Star found on the smaller planet before the Military Tank planet.

  • Spranglers - Spranglers are spidery monsters that hang from a spider web. To defeat them, you’ll need to spin attack them twice.

A Very Spooky Sprint

This level has access to 3 planets. The goal of this level is to beat the Spooky Speedster in the race!

New Enemies

  • Bats - Bats will fly towards you to try to damage you. You can jump and spin attack the Bats before they get to you to defeat them quickly.

  • Floating Mines - The Spiky mines are inanimate but will damage you if you touch them.

The Floating Mines will slow you down and damage you if you hit them.

Other Enemies

  • Goombas
  • Pumpkinhead Goombas

Hidden Star: Matter Splatter Mansion

This level is located within A Very Spooky Sprint. The goal of this hidden level is to follow the spotlight path to reach the power star.


  • Goombas
  • Pumpkinhead Goombas
  • Bats
  • Boos

Pumpkinhead Goombas are just Goombas with spooky armor!

Beware of Bouldergeist

There are five plants within this level. The goal of this level is to defeat the Bouldergeist using Bomb Boos!

New Enemies

  • Bomb Boos - Bomb Boos are explosive Boos that will travel towards you in order to explode in your vicinity. You can press Y to grab a Bomb Boo and spin it into objects to explode it.

Other Enemies

  • Bats
  • Floating Mines
  • Pumpkinhead Goombas
  • Goombas
  • Spoing
  • Spranglers

Boss Enemy - Bouldergeist

The Bouldergeist will throw lots of boulders at you, including black boulders that turn into Bomb Boos and golden boulders that smash into golden coins to give you extra hp. He will also occasionally cause stalagmites to grow out of the ground, so watch out you’re not standing on those or you’ll take some damage!

You’ll need to grab the Bomb Boos and spin them into the Bouldergeist. Damage him three times and you’ll destroy his rocky exterior. When you damage his weak ghost body, you will trigger his next phase. In the next phase, he will create giant rock arms for himself. He will use them to punch and flatten you so watch out! You’ll need to spin Bomb Boos into his body to damage him permanently. If you spin them into his arms, they will be destroyed but only temporarily as he’ll recreate them and he won’t take permanent damage. Spin Bomb Boos at his body three times to reveal his ghost form and then throw a final Bomb Boo at him to defeat him for good and grab the Power Star!

(1 of 2) Smash Bomb Boos into the Bouldergeist to break down its rocky armor

Smash Bomb Boos into the Bouldergeist to break down its rocky armor (left), second phase Bouldergeist has big arms and hands! (right)

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Guide Information
  • Publisher
  • Platforms,
  • Genre
    Action Adventure, Platformer
  • Guide Release
    24 September 2020
  • Last Updated
    8 February 2021
    Version History
  • Guide Author
    Seren Morgan-Roberts, Jarrod Garripoli, Ben Chard

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This guide for Super Mario 3D All-Stars offers a walkthrough for all three Mario classics.

Inside this guide you will find:

A 100% Walkthrough - For Super Mario 64, Super Mario Sunshine and Super Mario Galaxy.

A complete guide on Super Mario 64, including:

  • A layout of Peach’s Castle, with each course’s location pinpointed, as well as an overview of each course.
  • Walkthroughs for every star, including all courses’ 100-coin star.
  • How to get each of the power-up caps.
  • The location of every single Secret Star found in Peach’s Castle.

A complete guide on Super Mario Galaxy, including:

  • A Dome Overviews page outlining every galaxy found in each Dome.
  • Walkthroughs for every star, including hidden stars and comet stars, found in each galaxy.
  • A guide on how to unlock the Planet of the Trials galaxies.
  • Detailed coin-by-coin walkthroughs of Purple Coin levels.

A complete guide on Super Mario Sunshine, including:

  • Walkthroughs for every shine in every episode.
  • How to find every Blue Coin.
  • Strategies on how to secure 100 Coins on every Course.

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