Played games since the first Space Invaders hot the UK back in the 70's.
Just completed the game and it has been one of the most captivating games I have played in a very long time. I really cannot fault this - the music meshed perfectly, the voice acting was superb, sound effects excellent.
Absolutely recommended.
If you can, play using headphones - it really helps get the atmosphere.
I played using Crossover 12.0 on a Macbook Pro running OS X 10.8.2. It ran fullscreen and flawlessly. Game saving/loading was faultless.