this is my favorite vampire game,and i would love to see pewdiepie do a walkthorught of it.
This is a pc game based on the vampire masquerade pen-and paper games by white wolf, its an rpg where you play as a vampire from one of the several clans (nosferatu,tremere,toreador,brujah,ventrue,gangrel and malkavian).
The atmosfere of this game is very dark and creepy at times, spceailly the part where you go ton the Ocean Hotel in order to retrieve a locket or having to travel throught the sewers and fight horribly disfigured monsters to be able to reach the lair of the nosferatu clan. And you get to use all sort of cool vampire powers.

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serious? well in order make the game less serious , i would suggest playing a malkavian, there is always things like wacky dialog options one of which involves talking to a stop sign or talking to the Tv set, which is somethingthat i would imagine the pewdiepie would do.

here an example of a funny walkthrought
youtube.com/watch?v=8MkLGPS6RFY