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Bowser Castle is an unlockable stadium in Mario Superstar Baseball. It would seem that Bowser decided to build a Baseball Stadium inside his own Castle. It is unlocked by beating Challenge Mode at least once. It has lava all over the stage, so Bowser has had to put a protective cage over the lavapits, as that players can walk over it. However, Fireballs can still fly out of the lavapits, and will burn any player that gets hit. This will cause them to drop the ball, if their holding it. Additionally, the stadium is very high, and there are a few Thwomps on the sides, that will try to block the ball, making it hard to get a Home-Run. In Challenge Mode, Bowser Castle is the last stadium in every players story (including Bowser). When playing as Mario, Peach, Wario, Yoshi or Donkey Kong, then they must beat all of the other players, and then they will have to challenge Bowser's team in Bowser Castle. When playing as Bowser, Mario and a group of Eight other Captains (its a random pick) will steal Bowser's Castle, after Bowser beats all the other teams. Bowser must then challenge them to a Baseball match. The stadium is also where Star Dash, a Mini-game, is played.