I don't care if you think it should have been DLC, it's still the best 3D Mario game by far.
Now, let me explain why in this retrospective of sorts.

Alternate title: 'Super Mario Galaxy 2: The Best 3D Mario Has Ever Been'
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Links and stuff:

Some of the short sketches I made for this video in case you wanna watch them again:
Ode to the Ice Flower
Version 1 Full Blast(My original take on the Jontron Meme):    • Super Mario Galaxy 2 | Fine Wine  
Version 2 Sincere(Also by me but not used in the video since I thought version 1 was more in the spirit of the original):    • Ode to the Ice Flower (Sincere)  
Version 3 JonTron(The original JonTron audio overlayed on the footage. This was the version I intended to use until someone convinced me to make my own version of the song):    • Ode to the Ice Flower (JonTron)  
IT'S THEM(The Attack on Titan Goomba scene):    • IT'S THEM  
The Fluffy Bluff Galaxy Cloudless Challenge:    • Super Mario Galaxy 2 Fluffy Bluff Clo...  

The Inspirator for the Cloudless Challenge, ArgonMatrix:    / argonmatrix  
The original JonTron video, Banjo Kazooie: Nuts and Bolts, where the song in the Ice Flower skit came from:    • Banjo Kazooie: Nuts and Bolts - JonTron  

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Twitter:   / fromherot0zero  
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#supermariogalaxy2 #retrospective #review #analysis #nintendo #wii #fromherotozero #yoshi
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Timestamps:
00:00:00 - Intro
00:00:45 - The Hubworld
00:06:00 - Levels and the Problem with Mario's Movement in the Galaxy Games
00:12:01 - Prankster Comets
00:24:21 - Reused Content
00:27:42 - Bosses
00:48:50 - Power-ups
00:58:21 - Yoshi
01:02:20 - The Problems Galaxy 2 Fixed Since Galaxy 1, an Increase in Focus
01:05:10 - The Green Stars
01:10:14 - The Music
01:14:21 - Summary and Conclusion