Lifeless-feeling game words. Case in point: The Citadel from Mass Effect. It's gotten more lively in past games, but it still feels lifeless. Everyone is either leaning over a railing while craning their neck the same way for all eternity without ever leaving, standing still while facing each other but never saying a word, standing in place while only moving their heads to look at Commander Shepard when he passes by, or walking 20 feet in one direction then turning around and repeating for all eternity. I think Skyrim did it best when it came to towns and villages that actually felt like places with intelligent lifeforms. Villagers go from shop to shop, strike up conversations with each other, sit around fires while eating food or drinking mead, lean over railings, and at the end of the day go home to have dinner with their families and sleep. Go to a Stormcloak or Imperial war camp and you'll see soldiers talking with each other about the conflict, grinding their weapons, sitting around a fire, wandering the camp, chopping firewood and resting in their tents. Skyrim, in my opinion does the best job at creating a world that feels alive, where so many other games have sterile and boring worlds filled with NPC's who do nothing interesting.