The whole game is outside. It is made mostly of orange and white wool, to match Stampy's skin. In the middle there is a very high tower with trapdoors on each side of it. There is also a water pit so when they fall down. Don't worry, it will not be very deadly.
The goal of the game is to flap your way up to the top of the tower. You may flap your opponents so you can have your chance to make your way up, keeping others fall down a bit, but you may not attack them. The first person to flap their way up wins.