Low res effect

I want to achieve THIS effect:

but I don’t know how :frowning:
I thought about setting a custom resolution to 320x240, and spreading it all over the screen, but custom resolution works only with windowed mode, and when i want to resize window, resolution increases.
I don’t have unity pro to use pixelation ;(

Waiting for your reply!

Use RenderTextures to render a camera to a small size texture, and then scale that texture up to fill the screen.

Download unity 5. Then do render texture.