What an awesome experience playing this game was - wow! From the start to the end, I enjoyed every minute of it. The story is gripping, with multiple choices littered throughout the game, which influences the plot and eventually the ending!!! That coupled with a detailed level-up system, catering to different playstyles, means that this game has so much replayability. The feel of the game makes for a refined classic FPS experience - like the good old days; however, it possesses enough innovation to keep it fresh and modern. I found the game to be very immersive and atmospheric; I am an audiophile and there is enough ambient noise in this game to cause you to tread carefully (and look over your shoulder!) The greatest plus for me though is the space stations level design and exploration - this game does not hold your hand from point A to B like most games today. Instead, it piques you intrigue and makes you want to revisit areas that were once inaccessible, often resulting in a rewarding experience. I have only completed the game once, which means one day I am going to fire it up again and have another crack - it's just that good. If you buy it at today's offer price, there's no way you will be disappointed. Enjoy!