Uploaded December 2020 | Updated September 2026, 2 weeks ago
Welcome! In this video walkthrough series, we will play through Super Mario Galaxy on the Wii and Switch! In it, Mario must traverse the galaxy, collecting Stars to power up Rosalina's ship and make it to the center of the universe, where Bowser is holding Princess Peach! But to do so, we'll have to sling through launch stars, feed hungry Lumas with star bits, beat several comet challenges, collect a massive amount of purple coins and even unlock a hidden second playable character in order to collect all 242 stars and save the universe! Of course, this video walkthrough will help you collect all of them and conquer this game! While it was recorded using the Wii, this walkthrough fully works with the Switch version packaged in Super Mario 3D All Stars!
This video is broken up into 70 parts, each covering a galaxy (though the hungry Lumas and trial stars are all packed into one video each). Using the time stamps and chapters, you can easily skip to whichever star mission you need help with so you can collect all 242 stars in the game! The first 35 parts cover Mario's journey and the last 35 cover Luigi's journey.
In this twenty first part, we tackle the final galaxy of the Bedroom Dome: Bowser's Dark Matter Plant! Like most boss galaxies, this one simply contains one grand star, which you get after beating Bowser. Bowser's boss fight is nearly identical to the first time you fought him (have him ground pound a blue sphere and and whack him by shaking the Wiimote) but it is slightly longer. After beating this galaxy, you can gain access to the final boss as long as you have 60 stars. However, there are still two more domes to complete after this one so our journey is far from over.
0:00 Jerry Martin Gaming Intro
0:10 Unlocking Bowser's Dark Matter Plant
0:30 Darkness on the Horizon
7:25 Returning the Grand Star
8:12 Tutorial on Unlocking Final Stage
Welcome! In this video walkthrough series, we will play through Super Mario Galaxy on the Wii and Switch! In it, Mario must traverse the galaxy, collecting Stars to power up Rosalina's ship and make it to the center of the universe, where Bowser is holding Princess Peach! But to do so, we'll have to sling through launch stars, feed hungry Lumas with star bits, beat several comet challenges, collect a massive amount of purple coins and even unlock a hidden second playable character in order to collect all 242 stars and save the universe! Of course, this video walkthrough will help you collect all of them and conquer this game! While it was recorded using the Wii, this walkthrough fully works with the Switch version packaged in Super Mario 3D All Stars!
This video is broken up into 70 parts, each covering a galaxy (though the hungry Lumas and trial stars are all packed into one video each). Using the time stamps and chapters, you can easily skip to whichever star mission you need help with so you can collect all 242 stars in the game! The first 35 parts cover Mario's journey and the last 35 cover Luigi's journey.
In this twenty first part, we tackle the final galaxy of the Bedroom Dome: Bowser's Dark Matter Plant! Like most boss galaxies, this one simply contains one grand star, which you get after beating Bowser. Bowser's boss fight is nearly identical to the first time you fought him (have him ground pound a blue sphere and and whack him by shaking the Wiimote) but it is slightly longer. After beating this galaxy, you can gain access to the final boss as long as you have 60 stars. However, there are still two more domes to complete after this one so our journey is far from over.
0:00 Jerry Martin Gaming Intro
0:10 Unlocking Bowser's Dark Matter Plant
0:30 Darkness on the Horizon
7:25 Returning the Grand Star
8:12 Tutorial on Unlocking Final Stage
