I wonder if they will create an AI capable of beating a human in "Heroes 3"?
So, in theory, nothing prevents integrating this thing into the game, training it (for this, the AI only needs to play against itself), and that's it. Although, there is a challenge: a game of Heroes is objectively longer and more complex, and even in Dota, the AI was trained with limitations (they took a limited number of game modes and a very limited number of heroes that the AI can play as. It seems to be only one hero).
If you're interested.
Article on Habr
Website dedicated to OpenAI
On GitHub