DeepMind's AlphaZero?

I think it's an incoherent premise to suggest that you could have a human with no contextual knowledge or experience that pertains to playing an arbitrary game. There's no blank-slate human that you could test like that. Even the act of finding food and eating, walking around and avoiding hazards, observing the movement and behavior of other people and animals..those experiences shape a person's ability to interpret an environment and model the agents within it. Those priors would be useful for any first-attempt at a game.