This is a two hour Twitch video of user GrahamDunning playing Half-Life with all the in-game sounds replaced with various 90's rave music samples, basically making it a two hour impromptu rave concert. Not a very good one, mind you, but I've paid to see far, far worse. Mostly friends' shitty bands.
Keep going for the video, but definitely feel free to skip around while I shut the blinds, turn off all the lights in my office and start swinging glow sticks on shoestrings.
Thanks to Marcus O, who agrees people who wake up to EDM are an entirely different breed of human.