Remains Island (Japanese: のこされた しま Left-behind Island) is a dungeon in Pokémon Mystery Dungeon: Red Rescue Team and Blue Rescue Team that contains 20 floors. It cannot be accessed by normal means in the game and is only available through a Nintendo Event, using the Wonder Mail Code: ??M4 CJY? 44?P CF?8 7J6R (...)M?1. All Pokémon in this dungeon can also be found in the Northern Range and Pitfall Valley, with the exception of Wingull.
Note: The % are rough estimates.