Fancy a Donkey Punch?

Ok, Donkey Punch is a horrible title for a film unless it's about Eeyore's favorite drink, but I kinda like the look of this trailer. The film involves a party aboard a yacht that goes terribly wrong when one of them dies in a freak accident. What follows is a brutal fight for survival as they battle over what they must do to save their own skins.

I'm hoping it doesn't turn into an all-out murderfest. I'd prefer something more psychological, but judging by the trailer and the cast I don't think I'm gonna get that. Still, it looks interesting.