so i grinded star bits for a while (annoying) and unlocked the secret stages of world 6,the first secret level is boo themed,the gimmick is that the level is shrouded in darkness but sometime a thunder will strike and you get to see the platform for a second,it was okay
the second level was a underwater level,no surprise here but the music was nice
World S
the first level is mario coins (you know the level that look like the 8-bit mario sprite),the comet level is luigi purple coins tough this time you get chased by shadows clone,since this is considered one of the hardest level in the original,i went in to see where the green stars where and they where hidden under two disappearing block,all you needed to reach them was standing on a spot and wait for the block to disappear
the second level is another ball level,but there is no ball rolling music so it's ruined forever

the level itself is a gigantic slide (it uses mario 64 slide music) and it's pretty fun,the comet star is the same but requires you to get 100 purple coin out of 110
the third level it's just a normal platforming level but the platform spins making it very hard to not fall... fun! the comet level is the same but the platform spins twice as fast!
the fourth level has those thwomp who go around on a corridor and are cube shaped (do these have a name? i think it's tox box) i seems to remember there was a level pretty similiar to this in the original galaxy.. anyway one thing this one has is those button that slow time which are usefull because everything goes damn fast!
the fifth level as i said above is a boss rush made up of 5 galaxy 1 boss,there is petey piranha,then the fire squid,then the giant mole,then you fight the rock guy,and lastly you fight petey piranha fire version... the comet ask you to pull off this again but under 5 minute,very annoying
the last level is very cool,it's like the switch secret galaxy of world 1 but this time you switch wall,so you have to continuously switch wall so you can keep wall jumping!
and uh that concludes the whole tour... apparently there is a last level that gets unlocked after you get all 240 stars so i guess that will be the last update