A classic. Although the controller scheme hasn't aged well, the rest of the game certainly make up for it. The atmosfere is amazingly done, leaving you tense in a lot of moments and the great story it has leaves you -figuratively and literally- in the dark on purpose to amp up the terror factor. Puzzles are mostly well designed and the combat encounters well placed in the great levels that allow for a lot of different approaches, be it carefully eliminating all enemies or running around them.