Download TrialFull Screen Post-Processing Effects
Unity has many full-screen image postprocessing effects built in: Glow, Blur, Noise, Color Correction, Sepia Tone, Depth of Field, and more. Image Effects docs
Water
Just drag in Reflective, Refractive, or Simple Water prefabs into the scene. All will just work.
40 Built-in Shaders
Unity comes with 40 shaders ranging from the simple (Diffuse, Glossy, etc.) to the very advanced (Self Illuminated Bumped Specular, etc.).
Write Your Own
It is easy to start modifying the built-in shaders, or even to write your own. The users of Unity regularly donate specialized shaders to the community. Shader docs Unify Wiki shaders
