The Stadium, also known as the arena, is where all the fighters are forced to live and train.
The Stadium is a flying arena that hovers over the SSB world. Many items appear there randomly. It is very large and is highly prone to attack by the fighters' enemies.
If someone goes into the arena who is not an audience member, they will be stuck there forever and forced to become a fighter.
It is controled by The Control Room in the stadium HQ.