In today's tutorial, you will follow along to make your squares have a definite twist in the centre, and then, as it gets bigger, the pattern begins to straighten up.

The squares on the right and left are identical. The only difference that the colours are different between each. Amazing how different they can be.
The free pattern is available; it's called Wonky Square Afghan.
Crochet Diagram
To make it easier to follow, I put in RED the counts of the stitches in a row for easier follow-through. You can print this diagram if it helps you.

Kathleen says
You can also get to it through Ravelry. http://www.ravelry.com/patterns/library/wonky-square-afghan
Tamara Wright says
I really like the concept!
Michele says
The pattern can be found here: http://www.herrschners.com/product/Wonky+Square+Afghan+Free+Download.aspx
as a free download at time of posting.
Mikey, The Crochet Crowd says
Thanks for locating it.