Princess Peach's Castle, also known as Mushroom Castle or Castle Toadstool, is the home of Princess Peach Toadstool and the centerpiece of Toad Town. It appears in a plethora of games; Most notably in Super Mario 64 and it's remake, Super Mario 64 DS where it is the Hub of all Worlds.
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Throughout the years the Castle has varied in appearance greatly, it is still quite likely caused by variety in artistic direction, and not actual redesigns of the Castle. The following list describes the appearance of Princess Peach's Castle, game by game, in the order of which each game was released.
Appearances
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In Super Mario 64, the Castle and its surrounding areas make up the Hub, providing access to the game's Worlds. It is in this game that we are given our first, in-depth look at the Castle, establishing many of its recurring themes; Including it's stain-glass Portrait of the Princess, it's bridge & moat, red-tile roof, and it's light grey brick exterior.
In Super Mario Galaxy, Bowser uses the power of the Grand Stars to transport the Castle, with Princess Peach within, to the Center of the Universe. In appearance, the Castle looks like a modernized version it's Super Mario 64 design, maintaining all major elements from its Predecessor.
After rescuing Princess Peach from Bowser in the Moon Kingdom, Mario can travel to the Mushroom Kingdom, where you can enter Princess Peach's castle. While the castle's interior is heavily based on the version seen in Super Mario 64, there are very noticable differences, such most of the doors that lead to the paintings are missing, and the Big Star Door on the first floor is replaced with a throne.
In Paper Mario, the Castle is nearly identical to its design in Super Mario 64, differences include the stain-glass window being replaced by a bronze Super Mushroom Emblem, the Castle's flags changing in color from red to blue, and some of the spare rooms being put to use; For example, there is now a door at the top of the stairs in the Main Hall that leads into the Ball Room, which in turn connects Peach's Room, and the Castle Balcony.
It only appears briefly at the beginning of the game, when Mario and Peach are taking a walk, Lakithunder attacks the Castle, distracting Mario long enough for Bowser Jr. to kidnap the Princess. It looks aesthetically identical to its appearance in Super Mario 64.
With no apparent changes from its New Super Mario Bros., and Super Mario Galaxy design, the Castle is used as a place to purchase Hint Movies in exchange for Star Coins.
It has appeared multiple times throughout the Mario Kart series, beginning with Royal Raceway in Mario Kart 64. It then appears in Mario Kart: Double Dash!! in Mario Circuit and is located in the center of the course. Then it appeared in Mario Kart DS in Mario Circuit again. It later appears in Mario Kart Wii in Mario Circuit once again. Later in Mario Kart 7 for the Nintendo 3DS, Mario has his own track based on Peach's Castle. Here, you can actually drive IN the castle in a loop before gliding back to the ground.
The castle appears in Mario & Luigi: Superstar Saga as the first area explored, the first battle of the game with Bowser takes place here. After "Peach" releases a chunk of speech bombs, the castle explodes (but isn't destroyed). The outside of the Castle is known as Toad Town Square. The castle doesn't play much of a role after this. It can be seen from Hoohoo Mountain in the Beanbean Kingdom and is also seen in the ending credits. The Castle's design in this game is orange and white.
The castle again serves as a hub area in which players can buy, sell and trade as well as access the separate levels of the game via portals. The castle is also where the Mario bros. learn vital techniques such as Spin jump and Bros. Ball. It is taken over by the Shroobs during the events of Mario & Luigi: Partners in Time.
It makes a major appearance in Mario & Luigi: Bowser's Inside Story, when the Castle was temporarily taken over by Fawful. The castle was given the ability to turn into a giant robot by Fawful. It fought with Giant Bowser. It had the ability to turn invisible and shoot black holes. In this game, the Castle is fully magenta.
Princess Peach's Castle appears again in Mario & Luigi: Paper Jamas the first area of the game. The appearance has changed again, looking more like Super Mario 64's version but smaller and a bit more brighter and pinker. The attic is also seen, where the book containing the Paper Mario universe is held. Later in the game, after Bowser turned his castle into Neo Bowser Castle, Peach's Castle was destroyed by an airship fleet and the castle's large cannon located in the front of the platform it sits upon.
In the remake for Mario & Luigi: Superstar Saga, the Castle plays a fairly similar role to the original with a few changes. The most notable change is the exterior. It's colors have been changed to match that of Dream Team and Paper Jam's but the layout still remain the same as in Superstar Saga. Also, Toad Town Square has now been renamed to Peach's Castle. Another thing is that Peach's Castle is no longer visible from Hoohoo Mountain due to being blocked by the Clouds.
In the beginning cutscene of Mario Party 4, Princess Peach's Castle is shown. It resembles the same Princess Peach's Castle from Super Mario 64, with minor changes, like the windows are different from the original. It even shows her castle during the main menu in Mario Party 9.
Non-canon warning: This article or section contains non-canonical information that is not considered to be an official part of the Mario series and/or isn't considered to be part of the series' overall storyline.
The Castle is also used as a Stage in Super Smash Bros. Melee, and has a bit more of a brownish brick color to it rather than the more white color that has been seen in other Mario games. Players fight on the roof of the castle in this game. The castle also appears as an unlockable trophy throughout the game.
