(This story is a few months old, but interesting, nevertheless). The A.I. Google's DeepMind Team developed is called AlphaStar. Video games like StarCraft are mathematically more complex than chess or Go. The number of valid positions on a Go board is a 1 followed by 170 zeros; the equivalent for StarCraft is estimated to be a 1 with at least 270 zeros. Anyway, here's a short Video with some of the battle.
StarCraft II: Google DeepMind AlphaStar (A.I.) vs Pro Gamer!
If ya wanna get tons of info on the A.I. and its development, click here for a detailed Blog entry on DeepMind's Website.