DeepMind's StarCraft II AI can already hang with human players, but now it's ready to handle the best of the best. The team has revealed that its AlphaStar AI can play one-on-one matches in the real-time strategy game at a Grandmaster level for all three factions (Terran, Protoss, Zerg). The AI is better than 99.8 percent of human players on Battle.net, according to DeepMind. It's also governed by real-world restrictions, such as using the same virtual camera views, limited map info and even the number of actions per minute. The trick was to mimic the training of pro StarCraft players using a modified version of the usual reinforcement learning system.