Amnesia: The Dark Descent was not the first horror game in existence to put players into a powerless state, but it was the one that drew a great deal of attention to that style of play. Because of it, many have now gone on to seek infinitely more indie horror games and developers have responded by providing copious amounts of them.
Of course, those who loved Amnesia: The Dark Descent are hoping Amnesia: A Machine for Pigs will be available soon. Unfortunately, the game keeps being delayed. It was first delayed near the start of the year into Summer but now that we're heading into Summer it has been revealed this is not the quarter Amnesia: A Machine for Pigs will release in either.
This information was provided via Frictional Games in their forums where they said:
"We know we will not make Q2, we also know when the game will be ready for launch. We have not set the exact day yet. You can however make good use of the weather outside this summer and look forward to gaming with the piggies as the summer comes to an end."
With Summer ending in late September perhaps we'll see the game release in time for Halloween. Although that certainly wasn't their initial expectation, it's always a good time to sell a horror game.