There's already bots that are capable of this (often used for cheating in games) - but this research is trying something more difficult and interesting - which

There's already bots that are capable of this (often used for cheating in games) - but this research is trying something more difficult and interesting - which is teaching an AI how to play a game, with nothing but a ton of learning material. Things like moving around the map in a rational way, learning how to counterplay enemies, tactics when entering a room, all based on solely visual data, are extremely difficult. These skills are much more intuitive to humans, but much harder to learn than "there is a human head at {523,1021}"