The Flying Machines (also know as 'The Flyer') is an Mini Expansion that can be bought by itself or as part of Big Box 4. When bought separately the expansion also comes with a tile from the Crop Circles 2.
A dice is also included in the expansion. Two sides show one black square, two show two squares and three show three squares. When the active player draws a tile with the flying arrow on it he can choose a follower and roll the dice to see how many tiles the follower goes (in the direction the arrow indicates). The follower can become a knight, thief or monk by landing on their respective features but not a farmer on a farm.