I just wanted to say THANK YOU to the lovely dev team for creating this game. I have been waiting for such a game since I was a small child. Free Enterprise (yes, an ancient game!) was the first grab my attention, but it had some serious flaws. Big Pharma is a pretty decent game, though limited beca...

Personally, I LIKE the appearance of the Alien Artifacts -- being (relatively) a single color, and a bright one, they stand out, even at further zoom levels, enabling one to easily see if they have all been collected from destroyed structures.

You will also definitely want to pick up items that are no longer useful -- like miners on top of depleted ground. ... or walls/defensive turrets that you have moved past by expanding your base. When you are first learning the game, I HIGHLY advise you not to go into "ironman" mode... this...

If the sound is very regular it might be from your bots, (if you have a bot/logistics network). Drove me crazy until I figured out what it was....

On the UI, there should be a red triangle warning -- mousing over will tell you what objects are missing, etc.... (if this is causing the issue).