I have this game I like to play when I'm underground. My subway stop has a long corridor that's one level above the train platform and one level below the ground, and the G train stops in the middle of the platform, so I often find myself walking down the long corridor, as I cannot strategically get off the train right below the end of said corridor. I usually prefer to walk there (through the corridor) as the platform is more dangerous (what if a deranged person tackles me onto the tracks) and walking above, on the street, makes the walk home feel longer (underground space and time are different, somehow).