What caused the end of the world then?

I guess I might try again with the game, but asking here I could get moderate spoilers without a complete spoiler.

Duskers is a very cool game. It's very difficult and stressful, so it's easy to bounce off of; but the concept and execution are top notch.

Actual title: Misfits Attic Announces Duskers 2.0 Funded By Stray Signal