Amnesia: The Dark Descent

This is one of the scariest games in recent memory. The loading screen recommends you turn the lights off and play with headphones, something I'll strongly echo. Amnesia: The Dark Descent's puzzles aren't especially impressive and the voice acting can range from convincing to goofy, but the atmosphere Frictional has infused into the experience is as powerful as they come. It's a tale of terror that's menacing and disturbing from the very first moments, and only amplifies the further you progress. Any fan of horror, every Lovecraft fan, and any with even a hint of curiosity should give Amnesia a shot. Few games are able to conjure up an atmosphere this genuinely frightening.