Hardest Super Mario Galaxy Levels

I beat this the day I got it with a friends help. I got this star the day I unlocked grandmaster Galaxy. Freeze koopas, knock them off ledge. P2 can freeze them while P1 kills them, or P2 can freeze and spin over and over until they fall. Duck under boomerangs and rockets. The sentry beam and red and blue thing and octopus part is the real catch. On the pull star part, skip the last half of the electric things. Long jump off platform and catch pull star. Shake to go down and then pull yourself up over the whole thing and lath to the furthest pull star in reach, repeatedly

This Level is so hard because you have to complete an already hard stage with one life! This level was so hard for me that I couldn't even complete the first section and I still haven't beaten it.

I beat this on my first go, I died on the first level in the galaxy too many times, and my brain became conditioned to the level so I could do it. I only beat it again a number of attempts later.

I just unlocked the grandmaster galaxy. The first star was normal easy for me 'cause I studied lets plays. But the second star, didn't studied enough. Jeez Lewis I can't make it pass the first part( the one with yoshi). Like Champion's road in SM3DW, I never beat it.

My god, 7 out of 11 comments posted said that this star was incredibly easy and that they completed this star with one try and questioning themselves why Good Egg Galaxy isn't here if this one is. That is impossible, some of you are trolls or liars. I'm not saying ALL of you are, because some people might actually have completed this with one try, but 64% of the people thinking it's easy is simply impossible, it is a very hard level and no way so many people didn't have a hard time with this.
This level is absolutely insane. I usually get through all the parts except the last one pretty easy (though sometimes I make a mistake) but that last part is insanely hard. I often die here when attempting this. And wherever you stop, you go back to the stupid start of the level. Ugh! So hard! - Bokito

With everything up until the spire, be on top guard. Eliminate all does one at a time. With the spire, long jump often, give even a millisecond of attention to enemies and glass and star bits and question cubes never

Good God, going through the most intense galaxy in the game with ONE LIFE

Obviously the Perfect Run is harder, but this is still hard and takes me a good 10 tries to complete after revisiting the game multiple times - Wojt3kk777

The smasher is the only hard part. How is this harder than the garbage dump on the same level, or other levels actually hard?

I was amazed when I found out how hard it was. I would never see that again.

This should be number 3 behind perfect run and lava spire daredevil run - YOSHIA2121

Ugh! miss one and your dead! this level is awful!

Why is this all the way up here? Something more like Boss Blitz speed run should be up here. Or the dreadnought garbage dump, or stone cyclone, or something actually hard

There is a sort of pattern to follow that makes it easy. Just jump over the cosmic guys. This isn't very hard

This is the same as the first except for one thing. Cosmic guys.

...what?
I just DON'T UNDERSTAND why luigi's purple coin isn't number 5! LPCC is definitely harder than LPC! You need to collect all 100 coins, avoid clones AND you have to get the coins in time!

I chose this one because It's too hard for me and do it over and over again and I ask my dad to try it but he can try for a few times then I try to do the rest

I don, t know why you guys are rubbish at video games but i, m speaking from my advise that this is the 4th easiest boss in the game on my first time I beat him I actully felt sorry for him that I kicked his ass so hard

This is one of the hardest video game levels EVER. I spent 11 lives to finish it!

This took me 45 minutes to beat!

How hard can it be? (That was not a question, nor a rhetorical one. I tried it and it is one of the easiest levels in the game)

This is HARD but has plenty of coins with a low time to do it in.

You need to be careful with where you step or you'll find yourself running out of places to stand. Also it's times.

You wouldn't survive acid, rotating platforms and much more!

To be honest, to me, it isn't THAT hard. In my personal top 10, this one doesn't appear, all you gotta do is making sure you keep moving, no matter where you move to but keep moving and don't pull yourself to some mines or stuck in between those chicken bone looking things. That's what they remind me to. - Bokito

I was worried this would be a challenge, because I have heard from a lot of people that it is. Oops, my bad. It wasn't hard after all!

Took me two tries. The first time I was unable to reach the star in time. The second time I reached it in time

Nathaniel Bandy Wouldn't Say That - ChiefMudkip

You have to throw your bombs on the gold spots on the floor. Hard, right? I only figured it out by watching someone else play it.

Now here is an actual challenge, nothing above besides the grandmaster perfect run

I thought it was going to be challenging. I was right. Why isn't this higher?

Why is this down here? Does everyone else's bombs blow up in time?

Am I the only one that thinks this is very out of place? As well as the luigi purple coin levels?

Not hard. It is just a bunch of coins. Not very many obstacles

Let's do a game show. What is harder, fighting a 10x deadlier fiery version of Gobblegut, or collecting 100 measly purple coins? I say fiery Gobblegut! Get outta this spot, purple coins on the summit

This shouldn't even be on the list

The music of this galaxy is cool. The rest is not.

Took me maybe, MAYBE ten tries. The last green star is harder

Do u know how to steer? If so, ten tries is a lot for this level. They put bonus coins in!

I was totally annoyed of this level because of how many tries and GAME-OVERs it took me to get the PERFECT timing...

Fire+dragon+lava craters+six bubbles+6 lives= lots of chaos. I beat it, but it is hard! Why in the world does luigis purple coins or purple coins on the summit fall above this? Wait... This isn't even on the list? Does everyone else magically beat a hard boss like this first try? Well, I shouldn't complain. I do with bouldergeist. BOTH runs

I hate fiery bosses. It adds so much chaos and damage where there doesn't have to be, in my opinion. Took me forever to beat. I guess it is part of the game though

This only took me a couple of tries

The boss isn't that hard. What's hard is controlling spring Mario

There are so many platforms and includes a hard boss

I hate this level. Took me a bunch of tries, around the lane of fire bars

I always miss around the fire bar part, or hit the fire bar and fall