99 floors. bosses: regirock 15th floor regice 25th floor registeel 35th floor mew any of the floors from 36-98(attract mew with the music box from the parts of the three regis)
you can only get mew when u defeat or recruit regis on your team the three and then you MIGHT have a chance to get mew in floors 38 through 98. That is a good answer but just to make sure are we...