Vent art. Started off sorta as a digital inkwork then turned into a thing sorta inspired/influenced off the creepy poster from Presentable Liberty. Which btw is a freaking great game. It literally is a game where you just read a lot of letters but holy crap it is so emotional and heavy.
You can watch Markiplier's playthrough if you'd like, it is an hour long but trust me it is worth watching and I reccomend watching it all at once to get the full experience and emotion. It really is a heart-crushing game, pretty depressing to watch for some. I felt uber sad after watching it:
https://www.youtube.com/watch?v=jZTQPTQovZA