Playing 7 Days to Die. I've holed up in what appears to be a fishing shack. Cleared the zombies inside(died once, had to sneak back) by breaking open a hole in the wall next to the door and kneecapping them while they were distracted with the door, and decided to camp there for the night. I bring in a flaming barrel I find outside so I can see.
At some point in the night, I decide to start breaking down the walls for iron, which I sorely need(need iron to make a pickaxe to mine iron). I'm chipping away at the wall, and suddenly a zombie comes charging by. I'm already panicking, and then another zombie zooms by. Then another, then some more. None of them make any sound. Bear in mind, I'm in a building partially built over water, and I'm by the door which is facing out towards the water. I'm assuming these zombies are homing in on me, because there's literally no reason for them to by coming by the door. However, they don't decide to pop in and say hi.
A few moments of caution, and I decide to peek out see if they're just camping the door waiting for me to come out, or if there's more coming. Nothing to my right(where they came from), nothing to my immediate left. I step outside, and look down the lake's shore, and see several more zombies running that direction(bad on the devs, I see them de-spawn in the distance as well). Apparently, when they aren't trying to kill you, the zombies get together to run marathons!