http://zeldadungeon.net/Zelda06Masks.php It's all explained right here.
Yes, but you will not get the fierce diety mask.
The Indigo-Go's i think
yes
there is no adults mask but there is a fierce deity mask. You get it by playing all of the kids games on the moon. Also you need to have all the masks in the game to get it, thats very important.
you get the big wallet (by getting all the gold squltillas in the ocean place) and get the all night mask and listening to her stories with the all night mask on
It should work on all versions of Majora's Mask
Sadly, there is no 'after-game' to the Majora's Mask. Once you defeat the game, the only thing left to do is collect all of the masks if you haven't already collected them all.
Beat all the side quests and dungeons. It will take playing the song of time a lot.
There is no Known cheat that allows you to get the Fierce Deity Mask with out collecting all the Masks.
http://zeldadungeon.net/Zelda06HeartPieces.php BEHOLD! This site has everything Majora's Mask that you need! Well... pretty much everything...
Obtain all normal masks. Then, have the giants stop the moon from falling. When on the moon, some...interesting people will take your masks when you play with them. When you don't have any more masks, talk with the guy wearing the majora's mask. No one wants to play with him. When you talk with him, he'll mention how you have no more masks to play with. Then, he gives you the infamous Fierce Deity Mask.
well all you have to do is insert another game and go to keycodes then scroll down to Zelda then say yes to the question the gameshark asks (Are you sure you have this game? *Yes *No) then turn you N64 off and insert The Legend Of Zelda: Majoras Mask and turn it on. The LED light should go like this: 8, 5, 4, 3, 2, 1 _ and then it should load trust me i got pissed when i could'nt get Zelda to work