Machine Learning in Unity

One of my friends showed me a demo of machine learning in Unity, a Virtual Reality development software. It was just a simple demo where a square object learned its way closer to the target object (circle)--if the square object reaches the target, it is rewarded, and if it falls out of the boundary, it is given penalty. There seems to be a lot of interest in entertainment/art related application of AI/Machine Learning, and I am excited to see how "fun" these technology can be.