my computer almost died from this, cool little game

It certainly is a chaotic game, so kudos there. I like the touch of the thanks for playing message. 

Not sure if you did but might be worth adding Time.deltaTime to your movement calculations/formulas in unity to make it a little smoother. And always worth adding some sort of ending condition e.g. if all black tiles are destroyed present "resart game button"

But great effort overall.