For people who don't play city builders, it may be easy to look at them as something mechanical and bureaucratic. Grids of streets, well-ordered manufacturing production lines, and carefully tailored catchment areas to ensure residential zones will efficiently staff nearby businesses, don't scream the stuff of life. Though, play enough of them and you will often see there can be a good deal of living going on at street level. Zoom in close on Cities: Skylines and you can follow people as they travel to work, hover over your town in Anno 1800 and you watch the carts take goods from the harbours to factories to markets to the doors of your townspeople.
Life Below may not be about constructing a city exactly, but this underwatcher cosy city builder still captures that sense of bustling life.