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  1. Didn’t realise it was an early AI… “One of the most ingenious aspects of Pac-Man is that each ghost behaves differently—one simply chases the player, two try to attack Pac-Man from the front, while the fourth will chase and then abruptly change course.

    It was tricky because the monster movements are quite complex,” Iwatani said. “This is the heart of the game … The AI in this game impresses me to this day!”