There is some really good stuff on this list. Notable mentions for me House of the Devil, Pontypool, Triangle, Lake Mungo, The Innkeepers, Take Shelter, John Dies at the End.
Watched Dark Harvest last night. Available for rent or purchase on Amazon. I ended up buying it. Really enjoyable. Solid 7 or 8 out of 10 for me. Different take on these kinds of stories.
Last Voyage is pretty good. The setting and atmosphere is solid. As a former sailor I really enjoyed the setting and attention to detail. The scares were solid and they didn't try to do anything retarded with the ending.
It would have to be PvP and have permanent death or permanent item lose. Something severe. You can punish the loser by parading them through town to the gallows.