I was minding my own business until randomly the game made a whirling sound and screen went black.

I was caught so off -guard by this and the game didn't resume well after a minute, and hitting escape didn't do anything, so I ended up restarting the game. Was this an intended event?

https://clips.twitch.tv/ObedientKindLouseFloof-rJJNCB18UyKPUdLF

sounds like a black wisp, they're completely silent and can sneak up to you and do that, it makes that noise and makes your screen turn black when it catches you

Ooh that's what that's called. I kept seeing a something marked red (colored radar) on my radar near my base I guess that must have been it