Peach's Castle

Peach's Castle is a Tech Demo for the Nintendo GameCube. Included as part of the Nintendo GameCube Software Development Kit, the demo was used to show developers various features of the console presented in a game. In the demo, the player controls a red arrow that can go through various rooms in a rebuilt version of Princess Peach's Castle from Super Mario 64, with some limited interactivity and the ability to adjust the camera. Each room shows different graphical effects, which includes the following: large textures, bumps and shadows, anti-aliasing, local lighting, projection textures, environment mapping, and maximum polygons.

Welcome to GameCube World Sign
A single pixel line will appear beneath the Welcome to GameCube World sign in the beginning of the demo. Refer. This can be resolved by using the Software Renderer, but things will be really slow.

Coin Demo Room
Hitting the block in the coin demo room results in a "FIFO is Overflowed by GatherPipe! CPU thread is too fast!" error. Frequently pressing Yes on the dialog will allow emulation to continue, but it also may crash Dolphin. Refer. This can be resolved by disabling Dual Core mode.