The GameCube version of the popular people simulator makes use of some very nice looking 3D characters and backgrounds, features slightly faster scrolling and navigation, and provides some fashionable features to show off the three-dimensional architecture.
That's not to say there are no issues with the three-dimensional viewpoints of The Sims. While characters are more stimulating to watch as they can interact in any angle, the camera's ability to zoom does not go far enough to make out precise details. I would have liked the ability to zoom down into a life-like 'eye-to-eye' level. However, The Sims only zooms to a point where you can make out the characters and their situations, and some things such as The Sims' 'talk bubbles' are slightly fuzzy.
Sound is basically identical to the PC version, which has always been consistently high quality. Spoken Simlish, the simulated language of the computerized people, as well as the sound effects and music, are all of excellent quality, which makes for an amusing 'Charlie Brownish' life in the game.