Peach's Castle (tech demo)
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Peach's Castle is a tech demo for Nintendo GameCube. In 2001, Nintendo sent various developers an interactive Tech Demo in order to show them the graphical capabilities of their new console as part of the Nintendo GameCube Software Developement Kit. In this demo, the player controls a red arrow that can go through various places in Princess Peach's Castle from Super Mario 64. In different rooms it shows different graphical effects, which includes the following: large textures, bumps and shadows, anti-aliasing, local lighting, projection textures, environment mapping, and maximum polygons.
The castle is referred to in the game as Peach Castel (castel is an old French word for castle).
A hub area with 6 doors, 5 of which lead to other rooms. This room features a lot of animations.
In this room, the walls and ceiling have various flowers on it as well as mountain themed background. The floor has a star with flower in the background, which is made of small 3-star texture.
Spiral Staircase is a dark place with a spiral starcase in the center. As the red arrow steps on it, it begins to jump slowly to the bottom where the door to Hangar is. This room features Bump Mapping.
As the name implies, this is an in-door hangar with an airplane. In this room the player can find a metal Warp Pipe which leads to the Cave. This room features anti-aliasing.
In the Cave the player will appear on a wooden bridge which leads to a Goomba statue. The cave has some bulbs and colorful projector lights to light the path. Entering the green Warp Pipe will lead the player back to the Entrance.
Cinema Theater shows a short looping video with prototype Nintendo GameCubes of various colors.
In this room, the player will see a Metal Mario statue which utilizes environment mapping.
How Many Coins? is a white colored room with ? Block at the center. Pressing while underneath will release a large amount of coins. To exit the room the player needs to press or to control the camera, the player should press instead.
Camera control mode
By pressing the player can control the camera's angle and position. To move it the player should move the and to control the angle.
Wireframe is a visual presentation of a three dimensional object using narrow green lines that specify its each edge. It can be enabled by pressing . The Wireframe mode also makes the GameCube a bit slower than without it (this can be seen on the Lag meter), this is most notable in How Many Coins? room.
On the Pause menu the player can set Mip mapping, Rendering, Debug information display, Lag meter display, Gamma correction, an option to enable or disable the background music, and Sound Effects. It can be accessed by pressing . The player can go to the Main Menu, where they are able to choose the following modes: Normal Demo (default, the player is able to control the red arrow to explore the Castle), Auto Demo (the camera is controlled automatically and the rooms are changing as some time passes).
While the next room is loading, instead of the loading screen, the arrow is "knocking" the door until it loads. It can be seen that the lighting is added when the arrow stops.