Dementium II originally released on the DS in 2010, and now it's getting ported to PC.
Like the DS game, you take on the role of William Redmoor, a patient of a mental institution for the criminally insane. It appears as though Redmoor may have murdered his wife and children, but his memories are unclear. Redmoor's inner-demons manifest themselves as real demons in the mental institution that he must fight.
Dementium II is set for its PC re-release near the end of this year. You can check out some screens and a teaser trailer for the game below. The game's website is also live, which you can check out by clicking here.