Anti-chamber

Anti-chamber is a game that un- and re-teaches things you have learned from video games, and is a very unique experience to all who play it. If you like puzzles or just having your brain twisted play this game, strike that play it anyway.

here's the official website: http://www.antichamber-game.com/
the steam page:http://store.steampowered.com/app/219890/?snr=1_7_15__13
and a much more professional review:http://arstechnica.com/gaming/2013/04/review-antichamber-is-a-mind-bending-four-dimensional-journey/