Alphastar is a neural network that plays a real time game.

Biological brains are made out of trillions of neurons connected to each other. Aren’t animals just neural networks that are playing a game? The game is a 3d survival game that the network controls through a body. In order to win it has to learn to: Know to avoid predators, hunt food, reproduce ect.

In order to train Alphastar they let it play against slightly different variations of itself billions of times, each time the winning network move forward it’s information. That’s pretty similar to natural selection and survival of the fittest, where only networks with superior survival skills pass on their genes.