Shoggoths, tentacles and sanity meters. Let’s see how much Lovecraft there is in Bloodborne!
Warning: this video spoils pretty much everything. Almost all the endings, optional bosses, monsters, item descriptions. Everything.
A free anthology of Lovecraft stories can be found here. I reccomend starting with Call of Cthulhu, then Innsmouth, then the Mountains of Madness: http://gutenberg.net.au/ebooks06/0600031h.html