I think this is my favourite game.
The market for this game is instantly obvious and is catered to nicely.
The level design is great, lots of items that we take for granted in general life are given a new perspective as if you're looking at them for the first time again.
I liked holding down "e", I think it was "e" anyways, and looking like a zombie.
The camera liked to go behind things which is the only downer on this game. It was also very sensitive.