Super Mario Galaxy 2/Green Stars

Once you have opened World S and collected all 120 stars from all the levels, the second post game part will begin. If collecting all the 120 gold stars wasn't easy, green stars are going to be on entire different level. Rather than doing a course to get them, green stars will be scattered in every galaxy you had done so far, but with a twist - those stars will be sometimes in hard places to reach, and require certain movements and actions to collect them. At this phase though you probably will have enough knowledge on the controls and movements of Mario and even Yoshi, it's time to put them in to test.

Epilogue to Green Star
Once you finish the first time the Boss Blitz galaxy, you will be notified there's a guest in Mario Starship - a green Luma. Talking to him will reveal parts of the next post game content - "Seeking the cosmic jewels (written in green)... it's been our lifelong pursuit... There is a saying that "they can be found when all of the Stars have been collected". In other words, your job now is to collect all the 120 stars to open up the next episode.

Once all the 120 green stars collected (no matter which was the last one and from which galaxy) you will be referred to a new green Luma, who will say "Even if we have every Power Star, we still must defeat that monster... Or we'll never see the cosmic jewels...", and so will say the other green Luma. So to open officially the Green Stars episode, you gotta go back to Bowser's Galaxy Generator Galaxy, beat Bowser again and activate the rolling credits once more

It might take some time for the credits to roll in the second time, but you may notice some changes from the first time. Once the credits end, a new cutscene will appear of Roselina in her library from the first Galaxy game. Once every Luma will gather, she will say "Next, let's hear a story about the jewels of the cosmos... Let me tell you the story of the Green Star", after another dialogue the cutscene will fade away, and the game will make a notice "Prankster Comets (green writing) have appeared!" and the start screen will appear.

Your title save now will be "The green star challenge is on!", once entering the game Lubba will tell you that many prankster comets have appeared. Go to the World map and you will see the green comet dropping new green stars all over the worlds, and the Green Star episode begins!

Walkthrough
As being said in the epilogue to the Green Star episode, every place that had star on, will have it's own green stars. Meaning, every galaxy that had golden stars, will now have the same amount of green stars as their golden ones.

Collecting them all is really time consuming, but for any completionist out there, and to also gain access to the final Galaxy and the last two stars, there isn't any other way.


 * World 1
 * World 2
 * World 3
 * World 4
 * World 5
 * World 6
 * World S

Tips
Wether you gonna follow the guide or not, one of the green Luma on Starship Mario will say: "The universe is so full of joy... Have you even seen a cosmic jewel? They have such a happy shine!", "And if you listen closely, you can hear the wonderful tinkling sound when one is nearby! Seriously".

So there you have it, two canonical tips -


 * 1) The Green Stars will have little more shining than usual, so you will see it shine even if you do not directly see it.
 * 2) When you are close to a Green Star, you will hear it "tinkling" sound.

A non-canonical tips is, as soon you get into a level, use the first person camera to all side in the level, specially in a high place. In most of the cases, you will find the Green Star hovering somewhere. If not, it might be in the next level's platforms.