Searching for pixelation image effect.

Hi!

I’m searching for a pixelation image effect for Unity. Like this.
I want to make an old-school style game, and I need that effect for it for a “better” appearence. The game itself will be 3D, but pixelated, graphically similar to Duke Nukem 3D.

I have Unity Pro.

I couldn’t find an effect like that yet.

If I remember correctly, there was a pixelation effect in this package.