The Explorer's Friend Series is the twenty-fourth series of the Treasure Hoard. This series (except for The Key) makes up the Exploration Kit - its treasures unlock a new area or ability. Of the items listed, the Spherical Atlas and Geographic Projection are necessary to advance through the game's storyline and the only ones necessary to do so.
Announcement
You've collected the Explorer's Friend Series! Everyone has friends...except for spaceships.
Trivia
The total Poko value of this series's treasures is 1600 Pokos.