This game is the single best game I have ever played in my life. It has amazing story, amazing gameplay and very good music. Every single second in this game was a mystery until I managed to solve it and solving them was a lot better than solving ugly math questions.
Another thing I enjoy about this game is how it makes me feel like I am Gordon Freeman. Truly a masterpiece, thanks to everyone who worked on this game.
PS: If you do not own this game you are g*y.