Must try this! Sounds awesome.
PixelCamera for Unity3D
A downloadable tool
PixelCamera is a Unity3D script which was inspired by Ryan Nielson's excellent PixelCamera2D. It aims to improved the render quality of pixel art in Unity3D. It does so by rendering to a low resolution render texture. Instead of drawing this render texture to a quad, the render texture is blitted directly to the output of a second camera. It also supports custom upscaling shaders. Two example open source shaders are included under their respective licenses.
Checkout the GitHub page
Click download now to get access to the following files: