Amount of Floors - 12 Unlock Criterea - After clearing the Mt. Thunder Notes - Stock up on items and others before this dungeon, because after your clear this dungeon, the next event will be triggered when you enter the Pokemon Square, which will not allow you to go back until you've cleared the Mt. Freeze
Japan: November 17th 2005 US: September 18th 2006 Europe: November 10th 2006 Wii U Virtual Console Europe: 11th February 2016 Japan: 23rd March 2016 US: 23rd June 2016