I had more than a few late nights with Space Siege which is a good thing. While I didn't bite completely into the "What makes a person human" part of the game I did enjoy the nice diversion of running around and blowing stuff up in new and interesting ways. The game does force you to make some decisions on this and it adds to the replay value a bit as you can play through the game and have a different experience based on how much cybernetic equipment you use. If you're looking for a solid PC RPG to play, Space Siege is worth your time and money.