Quite an impressive horror/survivor game using similar Half-life 2's physics engine, but...
To get the most out of it, play it in the dark, and alone, if you can. The sound design is minimalistic but works well. The great physics engine makes exploration interesting at first, but the awkward controls become a little annoying when things heat up once in a while. One of the best parts of the game is getting things to work as the clues that the notes you find throughout the game gives very vague help, and every time when the approving dialogue comes out, you'd find yourself patting your own back for the good work.
Actually, now that it's in the budget corner, it's quite worth a weekend's time to check it out.