An artificial intelligence (AI) known as AlphaStar - which was built by Google’s AI firm DeepMind - achieved a grandmaster rating after it was unleashed on the game’s European servers, placing within the top 0.15% of the region's 90,000 players. Players of the science-fiction video game StarCraft II faced an unusual opponent this summer. StarCraft II players battle each other in a futuristic warzone.
