Even watching the human-friendly animation I would have struggled to call it Pac-Man. You'd need to render the dots as dots and the ghosts as ghosts, then it'd be recognizable easily.
Maybe because the picture you have in your mind is for the classic maze. There is a very famous AI course from UC Berkeley, CS 188, that uses Pac-Man with variable grid size to introduce Q-learning:
I think that after seeing that layout, plus the fact that the prompt mentions game and neural network training, you would have answered that the most likely game was Pac-Man :)
