Zero Island North has 75 floors.
=20 Floors=
yes you can save yourself in Pokemon mystery dungeon only if you have another runoff the game lets say you have Pokemon mystery dungeon explorers of time if you have explorers of darkness and are able to go to pelipper island you can send yourself a wonder mail.
i keep fainting on the 18-19 floor!!!!!!!!!!!!!!!!!
with scizzor,i'm just guessing
I think it is 20 or less
there are 75 floors in zero island north
Most likely 99!
You need to speak to Mr Mime who should be next to Kecleon Market.== ==
I sugest at least 1 fire type Pokemon, and one Pokemon that knows storm drain.
to get manaphy you need to complete the game and after several days sunflorer will be talking about a secret island.
You need to go to menu, select friend rescue (you need to quicksave in a dungeon) and you will go to pelipper island. You can leave by walking on the dock and your partner will come with you too.
you have to get the mystery jungle mission (hint: you have to rescue scisor and he will give you secret rank. to do that you have to beat dialga and go to blizzard island. Mew is the boss of Mystery Jungle.