At the Tower of Babel, God did not directly interact with Satan at all or his prot-g- Nimrod. God instead simply -went down- among the people and confused their languages by introducing many languages at that point. People divided along language differences and finally did what God had long before instructed Noah- to replenish the earth. Up to that point, everyone lived in the area of Shinar where the temple to the people's gods was being constructed as symbol of defiance and disobedience to God. It is the same spirit that is currently shaping the modern day system of Babylon.