There is an aphorism you sometimes hear when people compare video games to other media. Video games, they say, are a "lean forward" medium, while others are "lean back" media. Leaning forward is associated with control, activity, and engagement. Leaning forward requires continuous attention, thought, and movement, even if it's just the movement of fingers on analog sticks and digital buttons. It's one of the features that distinguish games from, say, television.