You don't need a specific species of Pokemon. Every day, a random number between 0 and 65535 is generated by the game. If this number matches the personality value of any of the Pokémon in the party, Mirage Island will appear in the game. To check if the numbers match, there is a man in Pacifidlog Town who tells you.
Chat with our AI personalities
you done do anything you need to wait the game develops the code thing ranges 0-(64K) and identifies if it matches someone in your party if it matches the old guy in pacificlog town will tell you he sees mirage island ^^hope it helps
In Pokemon Emerald, The Mirage Tower appears randomly. All you have to do to make it appear is keep going back-and-forth from Fiery Path to the Desert and it should appear. Just make sure you have the Mach Bike, You'll need it inside the tower to get past the fragile sand floors. And at the end of the Mirage Tower, you'll get a nice suprise! :)
In Pokémon Emerald, Mirage Tower will appear in the Desert that is to the North of Mauville City however it will only appear once you have spoken to the Ruin Maniac in Fallarbor Town. Once you head into the Mirage Tower, you will need to use the Bike that is the Mach Spike because of the various sensitive cracks in the floors. However once you have picked 1 of the Fossils then it (the Mirage Tower) will disappear and it will not return at all.
You have to get it from Action Replay or you need to trade, or Mirage it from the older Pokemon games into the Pal Park.
On four Island you will need a Pokemon that knows Surf.