The AI acted aggressively by blasting its opponents....because the game was designed with that being the optimal way to score points. If the optimal way to win was to just pause the game, it would have done that. 0/5 stars, would not read again.

Oh wowzers! DeepMind "AI" finds the most effective strategies for a couple of simplistic games. This "research" could have been done by an undergrad twenty years ago (with simple self-written algorithms), in a couple of months... max! Only positive point is the article is mercifully short.