...it has graphics about as good as The Legend of Zelda: Wind Waker (other than the lack of textures, the biggest downside is lack of real lighting, though that can be simulated by making the model itself have different shading on different polygons)
So in other words, it has graphics nowhere near as good as Wind Waker. Textures and realtime lightning are two of the most basic features found in every 3D engine made in the last 15+ years. Added to those, Wind Waker uses cel-shading, depth of field blurring and other advanced features. Unity3D offers you much more on top of that: Please login to see this link.