Whilst it might be the barbarian camp sound effect the others mentioned, you said 'mechanical' which makes me think that what you're hearing might be the audio for when late-game siege weapons move, there seems to be a minor bug that means the sound loops a few times more than it needs to before stopping - so that might be the explanation too![]()
That definitely sounds like a city just finished its production and needs you to select a new item to produce.
As for sounds, thankfully I've adapted to the spy sound. The first couple of times hearing the spy sound scared the hell out of me.
That definitely sounds like a city just finished its production and needs you to select a new item to produce.
Speaking of weird sounds, can anyone tell me what the metallic sound is that happens in a city that kind of sounds like a sword sound (although I'm in the modern era), and a flash happens in one of my cities (my capital actually). The latest case happening in my capital. I have seen/heard this sound before in other cities, but this game it's happening a lot in my cities, and I wish I knew what was happening. It kind of sounds like a sword slicing on stone. It's not a missionary conversion since my religion is still 100% present.
It's the sound and visual effect when something happens somewhere. You'll see and hear it for example when you start building something in a city. I'm assuming this is the sound/visual effect of a spy heading to your city, but I'm not sure yet. Could be a clue you need to counter-spy there...
a barbarian camp has spawned in the area you've explored.. would be nice to have a notification that could show you where..