Well if you want to play a horror game with your friend i'd suggest slendytubbies or survival, they are always fun. also if you're looking for more indie horror games to play u can check indiedb . com (that's allowed, right?) its just a site full of indie games, u'll find the one that suits you

theres some games i got recently which you will love the first one is simply called " the train" and its got ghost children abanded train and building and even flying mannequin heads the second is the paino aplha i havent played it yet but threw the images it looks scary as hell.

Jeff the Killer is scary

Hello, new here. Try out "1916 Der Unbekannte Krieg", its a free game and pretty scary. Fair warning though...it's intense! I'd love to see Pewds try this one lol. I quit after five minutes. That scary. Goal is to "find the ladder and escape the German trenches" and takes place in WWI. The name supposedly means 'the war you never knew'.
(google "1916 Der Unbekannte Krieg", the first link gets you to the creators site and download link, don't worry it's in English)

If you are looking for a free Horror game to play you should Check out Haunted memories on Steam. Completely Free and Completely Horrifying
If you are willing to pay 10 or 20 bucks you should get Slender: The arrival or Outlast. Both e=incredibly Scary games that you would love and hate at the same time!

Dead Island and Left 4 Dead 2 are multilplayer horrors. Not too scary imo but pretty fun