The clip was reportedly generated from a 'two-line prompt' fed into ByteDance's Seedance 2.0 AI video generator. But it may instead be based on real footage filmed in front of a green screen.
Luxtorpeda is a clever bit of kit that you can set as a compatibility tool for any game you have on Steam. You just install it, head into the Steam settings for whichever game you want to use it with, ...