Well, I beat the story part. There is still the advanced setting to go through, but I don't think I'm going to do that since... I might get owned and I want to end my Portal experience on a high note. Anyhow, Portal probably the most innovative game released this entire year, no other game comes close. The concept was well executed, the mechanics flawless (simplicity of the controls combined with the complexity physics), and the story turned out to be more than you'd expect. The game length is perfect as well. Since I wouldn't consider this game to be a full, game, it is tough to give this a rating, but in terms of the quality of satisfaction and enjoyment per hour, this game is ranked among the best.