Pokémon Mystery Dungeon: Explorers of Sky

Pokémon Mystery Dungeon: Explorers of Sky (ポケモン不思議のダンジョン 空の探検隊) is the fifth installment in the series for the Nintendo DS, and a sister game to Pokémon Mystery Dungeon: Explorers of Time and Explorers of Darkness. It was released in Japan on April 18, 2009, in North America on October 12, 2009, in Australia on November 12, 2009, and in Europe on November 20, 2009.

As with its predecessors, the game follows the story of a human who is mysteriously transformed into a Pokémon (determined by a personality test at the game's start-up). There were extra dungeons added, the titular event Pokémon Shaymin featured on the box was added, and alternate forms introduced in Pokémon Platinum (except for Rotom) were included.

Explorers of Sky expands on the plot of Explorers of Time and Explorers of Darkness, as well as exploring the background of several characters. New cut scenes were added and some were changed. Five new so-called Special Episodes are unlocked at certain points in the game which add to the overall game.