don't deal with the devil

one night while partying with your friends at the old rusted club, you decide you have had enough to drink as you through up in the bathroom and to partly remove yourself from the loud noises, yet when you left the bathroom you see a door across the top floor you were on and decide to check it out, what happens when you accidentally get locked in a room with sociopathic maniac as you play his sick game of roulette...